We also should not forget about the climate and lack/or price of of petrol problem either. In the car/motorcycle world the "restomod to current tech" is not as easy as forking out 1-2 thousand bucks for a newer/st gruppo...
There are easily and affordably available aftermarket complete solutions for conversions to electric or hydrogen yet. Of course there are nice videos of electrified VW bugs, Porsche 356s and classic 50's US cars, but they are not made by everyday curious humans but engineers with teams paired with a budget and equipment of a smaller race team.
For the part of today's younger generation, who has any care about the planet, classic cars could only be collectors items, which is fun, but missing out on the biggest part of the fun.