I'm impressed that a small flywheel actually stored enough energy to start the bike from a stop. He needs better bearings, like the magnetic bearings used for the utility scale flywheel storage units.
Check out this YouTube clip, starting where it shows how fast and far this bus could go on just the flywheel.
https://youtu.be/8X2U7bDNcPM?t=222
I’ve been watching Stanton from his first videos. Not even in peach fuzz yet. He’s fricking brilliant. He shares failure as well as successes. This kid is bound for glory.