Probably only good for single player games(unstable mobile connections). But don't play Civilization!
Tesla owner: let's play civ 5 because it would be cool!
1 hour in: ok just one more turn
50 turns later: alright it's getting late one more should do it
*Low battery warning* hours later: oh ok maybe this should be the last one then I'll charge up
20 turns later: battery dead
Tesla owner:... Oh sh**
Civilization strikes again
On a serious note, really makes you wonder if it's even worth using. Their 10tflop capable RDNA2 gpus would be pulling what over 200 watts? Not to mention the CPU too. Can't see this being useful outside of waiting for charging (even then slows down charging speeds).