Or it might even be resold to someone else who doesn't know the password - used equipment exists - and they don't engrave the password on the outside. But sometimes for this 'hidden' password to work, there must be another condition on the equipment to be present - like loopback plugs in place.

Well Done.

I don't see where this is going - I borrow books from my family members to read, go to the library to read, go to used books store to purchase. All of these events had only one original purchase - and I going to have to come up with money because I read someone's original first purchase book???

Get over it already. /end of rant/

I saw some pictures and some shaky video - it kinda reminds me of a laser light show. The blue haze cone of light points back to the source - but what do I know - I live in the cold in Idaho...

From my experiences being around some digging equipment will working for a phone company, this thing is more a figment of someones imagination that real life.
1) I don't see any handles, joysticks, etc for controlling any legs, diggers.
2) If they were going to use a bucket for a leg, they would need some sort of pad or other anti-skid device for digging on pavement - this thing as shown would slide all over on the back of steel buckets.
3) And why add a tire? It looks as if it is only trying to hold it. There is no visible mount.

Cooling, but not real life in my world...