I think we'll see the opposite -- ICE vehicles are going to go up in price as collectors items.
The supply is already gone and has been for a while. The other comment in this thread on ever-smarter (cloud connected) cars too means that the market for not-cloud-connected cars is going to continue to increase too.
Such as:
* Toyota Tacoma - yes * Subaru WRX STI - yes
But getting into the honda accord, toyota camry, these are the ICE vehicles that are going to be crazy cheap.