I don't use a car much that is why I have a used one for ~2500$. I know a mechanic for cheap repairs, I need it occasionally to reach friends and family and public transport is not an option since time has become so valuable and it doesn't work for emergencies.
I would not want to spend 20,000$ on a car because it would just be parked most of the time. Especially among younger people I see this very often. It will be interesting to see EVs hit used markets. My company leases cars for 50,000$ without thinking twice and some people just love cars that much, but that isn't realistic for the vast majority of people.
Currently used EV can cost 25,000$. Not viable for the mass market.
In the meantime, any new carbon tax would also work against this approach.
I think the main issue is that it's a lot easier to convert diesel's to run on alternative fuel oils then it is to get gasoline vehicles to do the same.
It's a matter of fighting against the laws of thermodynamics.