The Fliz

Some people can't ride traditional bicycles without a great deal of discomfort, particularly in the crotch area. For people like this and others, German designers created the Fliz bike, which doesn't have a seat - or pedals for that matter.

Instead, the frame goes up the back and over the shoulders. You get strapped into a harness where the frame goes up your back. You use your feet to get moving, which is very ergonomic. Once you're ready to coast, you move your feet to pegs on the back wheel. Seems like a great idea.