Comment by CliffStoll

Sigh — for all the time it saves me in carrying boxes from the crawlspace under our house … I probably spend as much time fixing, maintaining and improving the thing. Much fun, of course — I’ve built a line following device for it and played with PyTorch to get it to semiautomaticly pick boxes from stock. Yep - every minute it saves me goes right back into fooling around with the three-wheeled beast.