If you're like us, when you think 4x4, you think beer, mud, friends and exotic sports cars with impossible-to-afford sticker prices and impossible-to-pronounce names.

It seems like something that would have been invented before, and by red-blooded Americans for whom off-roading is a way of life, but the Trailcart, according to TreeHugger, is the world's "first pedal-powered four-wheel-drive off-road vehicle," and it was invented by a clever German fellow named Frank Fraune.