Your laptop may be 13 years old, but Apple is notorious for their walled garden and surely never officially supported Linux on it, or did they? So it’s probably the worst example.

Unless society as a whole is ready to move beyond capitalism that won’t change.

Energy density needs to increase for sure, but I see a point where cars charge fast enough that there will be less need to increase it further. I imagine it’ll look a lot like gas stations today, where they stop for a few minutes and leave again.

Most vehicles should be charging slowly at home anyways.

That’s what I meant. Compared to the power the GPU is actually using, transmission losses for a pass-through should be negligible. If you have a good way to get it to the card in the first place.

USB standard is up to what, 40Gbps and 240W? That’s pushing the envelope already. We’ll see if this new standard can prove itself, anyways.

It would just put extra thermal load on the GPU.

Passing power through doesn’t have to put noticeable load on the GPU. The main problem I see there is getting even more power to the GPU - Nvidia’s top cards are already at the melting point for their power connector.