Hi, Please can someone help me identify this movie, its been driving me crazy for years but recently i started having dreams about it and i MUST get a copy!!
Anyway - from what i remember the movie goes a bit like this:

Some guys building a prototype car, it looks a bit like a lamborghini from what i remember, and its nuclear powered (or something to that effect)anyway, a gang of youths break into the place where hes building it and steal it/ go joyriding etc, one of thems a woman and i think he either catches her or she feels bad about it or something and he ends up with her looking for it and probably sleeping with her.
Theres a scene in it where he drives his own car - a Porsche 911 in the rain, spins it and knocks the whale fin / spoiler / whatever off the back and smashing it up a bit - i think he eventually finds his prototype (its a bit wrecked as i recall) and ends up with the girl (as you do in these situations) - anyway, if anyones got any ideas Please post them, its really doing my head in!!!!
Sorry if the descriptions a bit sketchy but i saw this at LEAST 15 years ago.


Thanks in advance