I have posted about this machine a few times over the past years. There were quite few versions of it built here in the US. You could literally get them customized with anything you can think of. TVs, Bose speakers, etc. Those kinds usually plugged into the wall. I believe they (or some models) had a emergency battery that allowed several minutes operation should the power go out. They were priced too high for the ordinary home gym enthusiast. You can still find them at some places online or through P2P sales.
I'm guessing that's why it probably never took off. ($$$$).
An interesting concept.
I like the self-spotting thing, and the 'range of motion' thing like free-weights.
But the 'sensors in bar' not sure if I'd like/trust that or not.
The deep-dish Powertec plates Lee had are interesting, never saw those around before.