Malc,
No I don't think the whole world will abandon ICE (can't imagine Africa without the Toyota pickup) but the developed world (excluding the USA) is certainly heading that way and the UK faster than most.
The UK ban on new ICE cars and vans will come into play in only six years time. In fact it will probably happen long before that as manufacturers won't want to risk a £15,500 fine (2024 figure and certain to increase) for each vehicle they sell outside their ZEV quota and will cut their ICE offerings to the bone or just drop them altogether.
I would wager that in much less than six years, it will be difficult to purchase a new ICE car excluding exotica.
Hydrogen and synthetic fuel doesn't work as the UK legislation mandates ZERO tailpipe emissions; only EVs can do this.
ULEZ zones are going to get tougher and more widespread as it's easy money for cash strapped councils.
Pay per mile will probably have to happen as the tax take on petrol and diesel diminishes and you bet it'll be graded like VED so that the nasty ICE cars pay more.
Given the ever decreasing number of ICE vehicles on the road, how long will your local filling station stay in business?
I fear it won't be many years before petrol will be a luxury item only available to those with deep pockets.
Don't get me wrong here. I'm 100% against the stupidity of the whole thing and don't even start me on the crackpot "make the UK 100% renewable energy" nonsense but is just too juicy a low hanging fruit for politicians not to pluck it.