Remember, it's an electric motor! All or nothing! At least with a gas motor you could short shift to remove the hit and modulate the throttle. In the video there is a place early on that you can tell the bike is just spinning and he can't move around another bike. I think riding one of these in nasty conditions would take MORE skill than riding a regular bike.
Modern electric motor controllers ( especially brushless systems ) have a very smooth / seamless power application from nothing to full power. Every bit at, maybe even better, than any fuel engine.
