If you are dumping kW of power into electric motors and climate control, having an inefficient hot not-great 200W computer or two running in car entertainment might not be super noticeable.

The downsides of needing bigger VRMs to power the cores, and needing more cooling are both real costs, that diminsh the effectiveness of trying to save money on cores. But it is interesting to me that this feels like the one segment where people might not notice 100Ws of egregiously inefficient computing, because it's such a small fraction of the total power budget.

I think better modelling techniques and far cheaper and better CNC machining will more than make up for subpar materials.

After all, the blades inside a jet engine already have a melting point lower than that of the internal gas temperatures, and there is no limit to film cooling, as long as you can model it precisely enough.

If I had a few years of my life to spare, I wanted to make a demo gas turbine generator with all the moving parts made of chocolate to demonstrate that effect.