Start a Single Player Custom Race and choose an A Class car. Choose a G class AI car to race against (I chose the Toyota 2000GT because it's wing mirrors seem to stick out more, although I don't think it matters). Choose New York as the City and the Brooklyn Bridge Straight as the Route. Set the race to 2 Laps.
Proceed to then smash into the slower car until both wing mirrors are off (about a lap and a half).