I'm gonna step in from the engineering point of view (mine) and say that this thing is pointless as shown because it was powered externally, i.e. with that cable at the back. Now if you wanna use it outside of the area of the cable, you'll have to switch to batteries. Well, guessing that you'll have to carrie those batteries, you can't take that many of them .. right. So how long do you think those would last if you're pushing those 200 lbs .. or lifting those weights on the table ..


otherwise, it's a good idea. They just need to put a small nuclear reactor that would heat up water and produce steam, which will rotate a small el.generator that will power the whole thing for the next 1 year. Then I'll say DAMMNNNNNNNN

or you can keep walking with the cable ..