thinking about it, I'm sure I used to have the white car that went underwater.....it fired rockets from the back, the little "wing" stabilser things popped out each side as well.
Easy to forget that there was just nothing like the z3 around then though.
The Z8 was rarer still. - it didn't exist. The one in the film was a mock up ( I think stuck on a chopped up 5 series. Even BMW didn't have a car at that point.