Dan Hanebrink (a NASA aerospace engineer) has designed an all-terrain pedal-assist vehicle that is one part bicycle, one part motorcycle and one part Mars rover. Check the full article here from the coolist.
It really is, check out this bad boy from some crazy Hungarians going by the name of M55. It's a hybrid electric bike with some serious components and proposed speeds of 77mph (123ish kmh). Crazy!