Son of a gun!
I have been toying with a hubmotor design for something like this for a year or so...
love this iteration
even if a gas powered one.
with the designs I have been toying with was looking at having a foldable cross bar , to push against mid thigh, with the controller coming up between the legs
Twist grip throttle on a single shaft... hmmm
multiple use concept..
No rope "t-bar" ski tow (with roller blades/skates)
Use a bit like an oar for skate board
Use in front to drag (like water ski), behind to push
Even have a name... "the Broom"
But this ... seeing this example... both pissed off (cos I didn't get there first) and pleased, cos there we have POC