[Christ]

Well, good. :P

In most cases, if you were going to attempt to streamline a small car, you might actually do better to extend the wheel base to get a better angle for descent from roof line to tail break. This isn't always going to be true, but I'd bet in many cases it is, since the angle is presumably better the more slight it is, and you don't want to mess with the car's center of balance by extending the rear too far from the tires.