EVs being popular have little to do if they are the best cars there – the gov subsidizes the hell out of them (compared to other cars that are highly taxed to pay for the welfare state) so much so, that a Model S retails there for about the same as a $25,000 Audi (US price).
(And why is Norway so rich to begin with, you don't need to wonder.)
(And why is Norway so rich to begin with, you don't need to wonder.)