But computing applications also tend to use more or all of the available power... so by itself, tech improvements do not mean that power used will go down corre

But computing applications also tend to use more or all of the available power... so by itself, tech improvements do not mean that power used will go down correspondingly. (or else thanks to processor Flops/watt improvements, we'd have most laptops running for days on their current batteries, right?) It seems we'd only expect power use to go down when autonomous driving applications are "feature complete" and stop having a use for additional compute power. In the meantime, discussions of limits based on achievable/acceptable power draw (a la phones which I would guess have been in a consistent range for years now) are more likely to be meaningful.