The window came down and a hard-looking sod with a square jaw that looked like it was made of cast iron glared out at me. I put him at about thirty-five. My face dissolved into nerves. Both the driver and his front-seat passenger, a smaller, older guy with Brylcreemed hair and a greasy face, were already relaxing. They saw me as no threat. Just a man who pays his taxes and does what he's told for a living. I heard the one in the back mumble something but I didn't even look at him.

'What do you want?' demanded the driver impatiently.

'Er, I was wondering…'

I brought the gun up from my pocket, had this momentary paranoia that I might not have released the safety, and shot him twice in the right eye. He made no sound, simply fell back into his seat, head tilted to one side, and shivered out the final ounces of his life.

The front passenger swore loudly and immediately flung up his arms in a futile effort to protect himself. I leaned down slightly to get a better view of him and pumped out a further two rounds. One hit him in the elbow, the other in the jaw. I heard it crack. He shrieked in pain and then coughed violently as his mouth filled with blood. He tried to retreat in his seat, scrabbling about like a madman, unable to accept the fact that it was all over. I steadied myself and fired again, hitting him square in the forehead. The window behind him bloomed with red and his greasy features immediately relaxed. So far the whole thing had taken about three seconds.

But the one in the back was quick. He was already swinging open the door and coming out with what looked like a gun in his hand. I didn't have time to take a closer look. Instead I retreated three steps and squeezed the trigger as he came into view. I got him somewhere in the upper body but still he kept coming, and fast. I continued firing, holding the gun two-handed, teeth clenched against the noise that was exploding in my ears. The momentum of the bullets forced him backwards, driving him into the door. He did a manic, confused dance to the tune of the gunfire, his arms and legs flailing, and angry red spots appeared like pox on his crisp, white shirt.