i agree there are some pretty cool bike powered cars and some bike motors will make in the 200 hp range farily dependably. Squat for torque though so weight is a huge issue.
here is a smart car with a Hayabusa engine. It does 13.5 in the 1/4 but a Hayabusa puts out 175hp stock and that Smart car was stripped down hardcore to save weight.
http://www.youtube.com/watch?v=oPQIi...eature=related