Small Hub motor powered walker.

[speedmd]

I have been asked for help to build a all terrain 3 wheel mobility walker that would be self propelled via throttle or speed selector switch. It would be relatively light weight (target is under 60 pounds with a rest seat) and only needs to move itself. Current prototype calls for three 16 -20 inch wheels. Concept person wants to use a hub motor if it can be controlled effectively at walking speed 1-3 MPH / under 5KM /hr. Something like a small hub motor would be a simple clean install. Friction drive is also a option if a small hub can not be controlled in this speed range easily. Power/ current requirements would be minimal so overheating should not be at issue. Standard power tool type / size battery packs may be suitable as range requirements will also be minimal. Any ideas welcome for motor/ controller / battery setups.

Edit: Looks like hover board type wheel motors may be the ticket. Moved to thread. https://endless-sphere.com/forums/viewtopic.php?f=35&t=80925&p=1191910#p1191910