Used ICE vehicles will become valuable in California.
ICE car dealers in Las Vegas, Reno, Carson City, etc. become “more valuable” too! ;-)
In France what they did was to retroactively make older cars have to comply with emissions standards that they were never designed for even when new.
Then they couldn’t be licensed if one lived in “low emissions” areas.
Moves like that is where the yellow vests movement came from.
Or CA could use extremely rigorous “safety” inspections to force older cars off the road. That is what is done in many countries to limit vehicle ownership.
In the last two years, according to my insurance company, their valuation of my 63 Impala has shot up $6000. That’s just their computation of the coverage I should carry; which is related to, but not a dollar-for-dollar match for, how much I could get if I were to sell it.