Cars and big cities don't go together well. Parking is expensive. Free parking is rare. You're liable to spend more time sitting in traffic jams than it'd take you to ride a bike. Bikes, though, pose their own problems -- no one wants to show up to work sweaty, and even bikes can be cumbersome. The next step down is a skateboard, but it can present the same sort of problems, only on a smaller level. Enter electronic options, and most recently the "WalkCar", a laptop-shaped electric skateboard for urban travel.