I saw a car yesterday that would top most of those seen on that site: It was a black Honda del Sol, with a sparkle treatment on the bottom half of the car. (Not sure how o describe it) It had a huge rear wing which nearly reached the height of the car itself. The thing was lowered to the extreme, and of course, had its own 4" exhaust. It was driving up a hill when I saw it, so I didn't hace the chance to examine it any more closely. I did get to hear the muffler in action though, and you could hear it droning from at least 200ft. I wish I had snapped a picture...
Marty