The Volkswagen Scirocco from NFS World.
No custom handling included, this is the vehicles.ide line I use (uses Habanero handling):
scirocco, scirocco, car, HABANERO, HABANRO, VEH@LOW, NULL, 100, 999, 0.2826, 0.2826, 0.0, 2, 1.2 ,1, -
Known issues:
Doors don't work correctly (NFS World doesn't have properly seperated door models, so only the outside part of the door moves)
Damage makes you able to see inside the car (NFS World car models weren't made with IV's damage model in mind, so detached bumpers, hood and trunk reveal huge holes in the mesh)