99% of the electricity in Norway comes from hydro power plants, it's a huge exporter of gas and oil and it's rich.
That makes it easier to make such a progressive decision but congrats for setting the first deadline.
The effect is that the Tesla model S cost roughly the same as a BMW 5-series, or Mercedes E-class.
Non-zero-emission cars aren't exactly financially beneficial already. However, long-term they would want to tax ZE cars as well (at least the standard 25% VAT), so hence the fossil cars will need to become even more expensive.
But outside of the biggest cities public transport only runs during office hours. End result is that owning and using a car i vital to continued survival.
So expect this to turn petrol cars into something of a Giffen good, if not an outright Veblen good.
And even on that island with only ferry connection and 600 residents there is an hourly bus going the whole day to the local mainland town.
How far into the woods do you live? ;)
Its like a drug dealer that doesn't do his own drugs. You're still part of the problem. Out of sight out of mind.
I think banning any technology is a bad idea. Imho, the problem with climate change is not the burning of oil or carbon, but the emissions from doing it.
I live next to a busy road and I frequently have to sweep noxious dust off my balcony. Not to mention that the sky at sunset is not naturally orange, but is tinted by the haze.
We banned CFCs because they were removing the UV filter from our atmosphere, so there is precedent, and decades later nobody misses them.
While this would ban current fuel burning technology, it might allow for someone to come up with a car engine or coal turbine that doesn't release anything.
Economically viable is another question, but there's some possibility that this may be the case.
Just be aware that the US imports 40% of it's Oil from Canada if it stops doing so it will have a major impact on Canada's economy which is a thing no one wants especially considering the current issues with the Canadian economy. However it if wanted too it could stop importing oil all together today since it has more than enough local production, it would however increase the cost of gas and other petroproducts in the US since the US often imports considerably cheaper oil from OPEC and Canada while exporting fairly expensive US crude.
There are more exports of finished products than there are imports, but that's not really the same thing... refinery capacity is much more a function of money than oil production.
(as an additional point: 40% of the total US oil consumption is a lot more oil than Canada produces each day! - I expect 40% of the total imports are from Canada.)