I went down the "search rabbit hole" to find these "Right Angle Drives" from a company called
https://www.amt-schmid.com/right-angled-drives.html
I can't seem to find this specific manufacture's right angle drive's for sale anywhere.....but two of these motors....and even four of 'em would provide enough torque to get into the woods and hills of Pennsylvania....and if built thoughtfully, be able to climb stairs for traveling to "places".