Those at power always forget that the market takes care of most of the issues both real or bureaucrat invented. When humanity was switching from horses to ICE, there were no laws that would ban horses. Nowadays those laws would be invented for horses generate not exactly hygienic manure, tons of it, literally. Utilization of used and obsolete engines, horses, would be considered inhumane by today's standards. That being said, even the most authoritarian bureaucrats did not ban horses for all the flaws, for the emission of methane and relative impracticality.
The talks that some utilitarian technology, as ICE, needs to be banned only proves that the alternatives are not viable, and the open stated goal is, really, a population control with the baked in higher taxes.
One of the Brexit points was incandescent bulbs. At some point UK voters scratched their heads and decided that they do not need the bureaucrat what kind of bulb to use in their house.
Germany loves cars, it is, trully, a cradle of automobile production. Calls for the forceful ban of ICE, can accelerate GEREXIT at some point.
And a final point, that all the readers seem to be missing is related to the Military vehicles. When will we see solar energy powered armored personnel carriers, tanks, trucks? The country with battery or fuel cell powered army is very vulnerable.
Total ICE combustion ban, by law, is not going to happen.