Terry Hope was presented with a challenge. He was working aboard an 88-foot sailboat and the captain would not let him bring a standard electric scooter on board. The only way he could have one is if it were to fit into a suitcase, and it had to be rechargeable off the grid. So he developed the Hybrid Electric Kinetic Photovoltaic Vehicle you see here! The battery is recharged with both solar and kinetic power -and it folds up. Get the specs at his website. Link -Thanks, Terry!