We’ve seen plenty of cool folding bike concepts roll our way that never make it off of the drawing board, but Volkswagen has one that’s ready for the road. They’ve created a lot of buzz with their new electric bike that folds down to the size of a spare tire. The VW’s Folding Bik.e runs for about 12.5 miles a charge, drawing power from the car’s DC current or a regular household AC outlet.