A controller sounds nice, but might be dangerous. You really have to drive this to understand how instantaneous the 'on-off' is. When I finished, I let buddy drive it around the block. When he came back and pulled up, he was laughing so hard he nearly fell out of the drivers seat! I think his exact words were "It goes from completely un-drivable to bones stock-you'd never know anything was different". I think the manual control is important cause you got to be ready for it!
