Brings up the horse and buggy analogy. ICE will still exist, they just won't be important any more.
I actually don't think so. For a horse and buggy, it's pretty self contained. You get a horse, which are creatures that breed on their own and feed of easily accessible grass/hay/apples, and need minimal mechanical knowledge to deal with, and a buggy, which in the most basic form still work with four wheels and a box.
A car however, requires
gasoline--which substance alone takes many, many steps to get to the consumer. It's not like it grows out of the ground, the average individual can't produce it themselves. Same for oil. With the increase in electric cars, gasoline consumption
will decline--and that whole chain needs every step at it's current level to survive. Any one section fails and the hole system will be thrown out of whack. Look at what happened during the peak Coronavirus lock down--oil futures were
negative. And that was only a brief reduction in use!
Even if you can get the pricey gas/oil, the average person can't maintain their own vehicle without other, highly specialized services which may
also collapse with the lack of demand. Where are they going to get their head gaskets? Where are they going to get their timing belts? Where are they going to get that one sensor connector that's notoriously difficult to come across? With more and more people having electrical cars (and thus no need for timing belts, or fuel pumps, or spark plugs, etc), the AutoZones and like business may also collapse.
Further off that last one--while gasoline itself is widely used in any number of engines, and thus may still have some application, all the various makes and models of cars will not have that same luxury. You have a 1998 Ford Explorer? Can't use the timing belt from a 2017 Mini cooper. Part costs may take a bit longer to collapse, as it's not as monopolized as gasoline, but I don't doubt that ICE parts will become more and more difficult to get as people switch to EVs, and thus don't need those parts on the regular any more.
So, no, I don't think ICE cars will be as tenacious as horse and buggies are. I think they'll have a mass die off, with exponential growth.