Seems indeed, and in fact an A/C will eat a kilowatt or more, but... The components of this system need to generate next to zero heat and they need to be place

Seems indeed, and in fact an A/C will eat a kilowatt or more, but... The components of this system need to generate next to zero heat and they need to be placed in all sorts of inconvenient locations. That's causing automakers to desire extremely low-power dedicated circuitry over GPUs. Consider as an example the C7 Corvette: despite its enormous blindspot, it still doesn't have blindspot indicators because they can't find any way to cram existing sensors into the thing. There are more examples, that's just the one with which I'm most familiar because I balked on purchasing one over this despite an insanely great deal on it at the time.