I began to understand the real excitements of the car-crash after my first meeting with Vaughan. Propelled on a pair of scarred and uneven legs repeatedly injured in one or other vehicle collision, the harsh and unsettling figure of this hoodlum scientist came into my life at a time when his obsessions were self-evidently those of a madman.

As I drove home from the film studios at Shepperton on a rain-swept June evening, my car skidded at the intersection below the entrance to the Western Avenue flyover. Within seconds I was moving at sixty miles an hour into the oncoming lane. As the car struck the central reservation the off-side tyre blew out and whirled off its rim. Out of my control, the car crossed the reservation and turned up the high-speed exit ramp. Three vehicles were approaching, mass-produced saloon cars whose exact model-year, colour schemes and external accessories I can still remember with the painful accuracy of a never-to-be-eluded nightmare. The first two I missed, pumping the brakes and barely managing to steer my car between them. The third, carrying a young woman doctor and her husband, I struck head-on. The man, a chemical engineer with an American foodstuffs company, was killed instantly, propelled through his windshield like a mattress from the barrel of a circus cannon. He died on the bonnet of my car, his blood sprayed through the fractured windshield across my face and chest. The firemen who later cut me from the crushed cabin of my car assumed that I was bleeding to death from a massive open-heart wound.

I was barely injured. On my way home after leaving my secretary Renata, who was freeing herself from an unsettling affair with me, I was still wearing the safety belt I had deliberately fastened to save her from the embarrassment of embracing me. My chest was severely bruised against the steering wheel, my knees crushed into the instrument panel as my body moved forwards into its own collision with the interior of the car, but my only serious injury was a severed nerve in my scalp.

The same mysterious forces that saved me from being impaled on the steering wheel also saved the young engineer's wife. Apart from a bruised upper jawbone and several loosened teeth, she was unharmed. During my first hours in Ashford Hospital all I could see in my mind was the image of us locked together face to face in these two cars, the body of her dying husband lying between us on the bonnet of my car. We looked at each other through the fractured windshields, neither able to move. Her husband's hand, no more than a few inches from me, lay palm upwards beside the right windshield wiper. His hand had struck some rigid object as he was hurled from his seat, and the pattern of a sign formed itself as I sat there, pumped up by his dying circulation into a huge blood-blister – the triton signature of my radiator emblem.

Supported by her diagonal seat belt, his wife sat behind her steering wheel, staring at me in a curiously formal way, as if unsure what had brought us together. Her handsome face, topped by a broad, intelligent forehead, had the blank and unresponsive look of a madonna in an early Renaissance icon, unwilling to accept the miracle, or nightmare, sprung from her loins. Only once did any emotion cross it, when she seemed to see me clearly for the first time, and a peculiar rictus twisted the right side of her face, as if the nerve had been pulled on a string. Did she realize then that the blood covering my face and chest was her husband's?

Our two cars were surrounded by a circle of spectators, their silent faces watching us with enormous seriousness. After this brief pause everything broke into manic activity. Tyres singing, half a dozen cars pulled on to the verge and mounted the central reservation. A massive traffic jam formed along Western Avenue, sirens wailed as police headlamps flared against the rear bumpers of stalled vehicles tailing back along the flyover. An elderly man in a transparent plastic raincoat was pulling uneasily at the passenger door behind my head, as if frightened that the car might throw a powerful electric charge into his thin hand. A young woman carrying a tartan blanket lowered her head to the window. Only a few inches away, she stared at me with pursed lips, like a mourner peering down at a corpse laid out in an open coffin.

Unaware of any pain at that time, I sat with my right hand holding a spoke of the steering wheel. Still wearing her seat belt, the dead man's wife was coming to her senses. A small group of people – a truck driver, an off-duty soldier in uniform and a woman ice-cream attendant – were pressing their hands at her through the windows, apparently touching parts of her body. She beckoned them away, and freed the harness across her chest, her capable hand fumbling with the chromium release mechanism. For a moment I felt that we were the principal actors at the climax of some grim drama in an unrehearsed theatre of technology, involving these crushed machines, the dead man destroyed in their collision, and the hundreds of drivers waiting beside the stage with their headlamps blazing.

The young woman was helped from her car. Her awkward legs and the angular movements of her head appeared to mimic the distorted streamlining of the two cars. The rectangular bonnet of my car had been wrenched off its seating below the windshield, and the narrow angle between the bonnet and fenders seemed to my exhausted mind to be repeated in everything around me – the expressions and postures of the spectators, the ascending ramp of the flyover, the flight paths of the airliners lifting from the distant runways of the airport. The young woman was carefully steered from her car by an olive-skinned man in the midnight-blue uniform of an Arab airline pilot. A thin stream of urine trickled involuntarily between her legs, running down on to the roadway. The pilot held her shoulders reassuringly. Standing beside their cars, the spectators watched this puddle forming on the oil-stained macadam. In the fading evening light, rainbows began to circle her weak ankles. She turned and stared down at me, a peculiar grimace on her bruised face, a clear confusion of concern and hostility. However, all I could see was the unusual junction of her thighs, opened towards me in this deformed way. It was not the sexuality of the posture that stayed in my mind, but the stylization of the terrible events that had involved us, the extremes of pain and violence ritualized in this gesture of her legs, like the exaggerated pirouette of a mentally defective girl I had once seen performing in a Christmas play at an institution.

I gripped the steering wheel in both hands, trying to keep still. A continuous tremor shook my chest, and almost stopped me from breathing. A policeman's strong hands held my shoulder. A second policeman placed his flat-peaked cap on the bonnet of the car beside the dead man and began to wrench at the door. The frontal impact had compressed the forward section of the passenger compartment, jamming the doors on to their locks.

An ambulance attendant reached across me and cut the sleeve from my right arm. A young man in a dark suit drew my hand through the window. As the hypodermic needle slid into my arm I wondered if this doctor, who seemed no more than an overlarge child, was old enough to have qualified professionally.

An uneasy euphoria carried me towards the hospital. I vomited across the steering wheel, half-conscious of a series of unpleasant fantasies. Two firemen cut the door from its hinges. Dropping it into the road, they peered down at me like the assistants, of a gored bullfighter. Even their smallest movements seemed to be formalized, hands reaching towards me in a series of coded gestures. If one of them had unbuttoned his coarse serge trousers to reveal his genitalia, and pressed his penis into the bloody crotch of my armpit, even this bizarre act would have been acceptable in terms of the stylization of violence and rescue. I waited for someone to reassure me as I sat there, dressed in another man's blood while the urine of his young widow formed rainbows around my rescuers' feet. By this same nightmare logic the firemen racing towards the burning wrecks of crashed airliners might trace obscene or humorous slogans on the scalding concrete with their carbon dioxide sprays, executioners could dress their victims in grotesque costumes. In return, the victims would stylize the entrances to their deaths with ironic gestures, solemnly kissing their executioners' gun-butts, desecrating imaginary flags. Surgeons would cut themselves carelessly before making their first incisions, wives casually murmur the names of their lovers at the moment of their husbands' orgasms, the whore mouthing her customer's penis might without offence bite a small circle of tissue from the upper curvature of his glans. That same painful bite which I once received from a tired prostitute irritated by my hesitant erection reminds me of the stylized gestures of ambulance attendants and filling station personnel, each with their repertory of private movements.

Later, I learned that Vaughan collected the grimaces of casualty nurses in his photographic albums. Their dark skins mediated all the sly sexuality which Vaughan aroused in them. Their patients died in the interval between one rubber-soled step and the next, in the shifting contours of their thighs as they touched each other in the. doors of emergency theatres.

The policemen lifted me from the car, their firm hands steering me on to the stretcher. Already I felt isolated from the reality of this accident. I tried to sit up on the stretcher, and swung my legs from the blanket. The young doctor pushed me back, hitting my chest with the palm of his hand. Surprised by the irritation in his eyes, I lay back passively.

The draped body of the dead man was lifted from the bonnet of my car. Seated like a demented madonna between the doors of the second ambulance, his wife gazed vacantly at the evening traffic. The wound in her right cheek was slowly deforming her face as the bruised tissues gorged themselves on their own blood. Already I was aware that the interlocked radiator grilles of our cars formed the model of an inescapable and perverse union between us. I stared at the contours of her thighs. Across them the grey blanket formed a graceful dune. Somewhere beneath this mound lay the treasure of her pubis. Its precise jut and rake, the untouched sexuality of this intelligent woman, presided over the tragic events of the evening.