[Bicycle Bob]

Detroit cars in particular have a long history of borrowing shapes from aircraft. Some of the earlier ones inadvertently produced lift, which gave streamlining a reputation for dangerous handling for decades. In the early 50s, there were a lot of propeller spinner shaped bumper guards, known in the styling department as "Jane Russels." Then came the jet era, with fake intakes and exhausts, and big tail fins. There's even a picture of the first GM Firebird show car with a couple of guys ready to pull wheel chocks away, as if the brakes couldn't hold it against the very feeble jet thrust.