This one must be real fast.

You guys obviously don't know %#^* about aerodynamics! That wing is a marvel of engineering and is probably worth about 10-15 mph. Yeah, right.

I know this was a joke, but I'm amazed at the number of wings I see. I saw one on a Saturn today. A f'n Saturn.
I actually know a guy who installed his own "supra"-wing on the back of his Alfa (looked like absolute poop). The idiot used bolts indeed, but he only bolted onto the external sheets of the car, not the frame ... Wing went airborn @ 65 on the freeway, along with a big piece of the trunk ...