Get instant power assistance while riding around the city with the help of Gocycle by Karbon Kinetics Limited ($900 - $2,500). Gocycle is a lightweight bike developed for professionals and families that combines a low profile, folding design with an electric motor capable of speeds up to 15mph and holds a charge for 3.5 hours of battery power. It can function as a normal pedal powered bike and can easily switch to instant electric power with at a touch of a button located on the handlebar. Gocycle features a magnesium alloy frame and wheels that is both durable and lightweight, and a fully-enclosed, three-gear drive system for a sleeker look.