Powered by lithium-ion batteries that drive a highly efficient 4-horsepower motor, MoonBikes have a wide, steerable ski up front and a motorized track in the rear. It’s an electric vehicle that looks something like a mashup of a snowmobile and a fat-tire mountain bike, and it operates a little like both. MoonBikes can ride packed-down trails, cut through powder, slice through gladed sections of trees and switch directions with a very small turning radius.