There's no fear of catastrophic failure at 60mph on the highway, if its motors are only capable of a top speed of 40mph. It's not a highway vehicle.

Aerospace has used fly-by-wire computer-controlled unstable vehicles for years. I trust a well-designed computer more than I do an average motorist.

The problem is the belief that is hardwired into the humans basic instincts about balance. We see the bike and we see balance problems and danger (not that this doesn't have that) but they probably thought of that and are working on it.