This works best with the Daihatsu Van, the Ford Transit or the Hiace people carrier. It also works with police cars, but is rare. In free roam mode, go to St. Pancras station (Kings Cross) and go to the area where the stairs are located. Go all the way to the gas station, and drive towards the steps at full throttle. When you get to the top of the steps, swerve left then turn right when you get to the elevated stair-looking area. When you get to the top of them, turn left again so that the car spins the opposite way. It should either flip over or hit the station wall. If you manage to get it over, shoot the radiator on the car until it catches on fire; you will get better effects of the flames.