DIY electric personal vehicles are a field where even hobbyists can meaningfully innovate, and that’s demonstrated by the Mega-Wheelie, a self-balancing one-wheeled skateboard constructed as an ...

The biggest stories of the day delivered to your inbox.

Some electric skateboards are nice sedate ... Manufactured by Australian startup Radium Performance, the Mach One delivers 8,000 watts via two rear-wheel motors which take it from 0 to 30 mph ...