Electric bikes have a stigma; the idea that using one is like getting a free ride. The truth is, e-bikes don't move unless you pedal, but cutting-edge internal motors and rechargeable batteries mean you can go a lot faster for a lot longer — and that has a rapidly growing appeal. "Young families are buying electric cargo bikes as car replacements. And athletes into high-end road and mountain bikes are getting them, too," says Joel Grover, co-owner of the Splendid Cycles shop in bike-centric Portland, Oregon. Here are six standouts we tested.