At this price point it actually has nothing to do with grinding on battery tech and scale manufacturing, the limiting factor is physics. You can only make it so aerodynamic before you hit diminishing returns or it stops looking like a car. You can only make it so lightweight. And so forth.
This is vaguely as good as it can get and we can say that because we understand how it all works.
LLMs on the other hand invite all kinds of magical thinking around unlimited potential because we poked them with a stick and something interesting comes out it must mean that if we poke it just right we will get an AGI. That just doesn't logically follow from what we know of it so far.