The battery is 72KWh almost the capacity of the Tesla Model S 85KWh battery. The carbon fiber structure is super light but at the same time super strong. The plane flies very quietly and "not even a vibration" just like the Tesla Model S. It may be a long wait, but someday ICE will disappear and people will never look back to the stinky time of using oil as energy source. I can't wait for a Tesla airplane. It should not be long, since SpaceX is making rockets already.