Yamaha Moegi Concept - The Moegi is essentially, an ultra-light, ultra fuel efficient motorcycle (powered by a single cylinder four-stroke engine). Potentially capable of 50 mph and a mindboggling 188 miles per gallon.
Named after a South American cactus known for its hallucinogenic properties, Satya Kraus' Achuma custom motorcycle is part old Harley and part motocrosser. It's also one of the stars of the 2013 Bike EXIF motorcycle calendar:
Train Wreck, the Steam Engine Concept Motorcycle - autoevolution .Colby Higgins is a design student in Boston, and Train Wreck is his brainchild: just like the name suggests it, we're dealing with an amazing steam engine bike concept.