GeoOrbital Wheel
GeoOrbital Wheel Prototypes for 2016 Make your bike electric in 60 seconds https://www.kickstarter.com/projects/1266381423/geoorbital-wheel-make-your-bike-electric-in-60-sec Use your bike to go up to 20 miles per hour for 20-50 miles - quick installation, universal compatibility. http://pc.watch.impress.co.jp/docs/news/yajiuma/20160502_755992.html 1回の充電で最大時速32kmで80km走行可能 https://www.youtube.com/watch?v=9BMcks55vfE