You making a lot of assumptions that arent born out by current experience. Its not uncommon for 100 year old cars to be registered and driven on public roads today. I personally have registered “daily drivers” from the 1970s and 80s. I actually rebuilt my 1972 motorcycle using factory parts from the dealership. As cars get rare they tend to increase in value, which also increases the return on effort/money put in to them. The “last running ICE car” is going to be a prized gem in a collection, not scrap metal.