https://technabob.com/blog/2018/08/20/autobalancing-electric-skateboard/
Technabob
By Shane McGlaun
If you are into skateboarding, but want to do it with as little effort as
possible, this might be just the ticket. The Autobalancing Electric
Skateboard lets riders zoom along at speeds up to 17 mph while the
skateboard does the hard part of keeping them upright…