Comment by dizhn

Your bike is upright and the handlebars straight. You add velocity to it. There's no tipping there. It will go straight forever. It's a self balancing system - unlike skiis. You only tip the bike over to turn and that (counter steering) only after a certain speed.

I maintain that it's looking at the pedals. Looking itself doesn't do anything but a newbie will move the handlebar or lean while looking and or won't generate enough speed. Couple of days on the saddle and they can look anywhere while riding.