This turns into chicken and egg. In Oxford the bus companies have been struggling and having to put on more buses to be able to keep the frequency up because they're getting stuck in congestion. But my point was that it's the single occupancy cars that are the problem, whether they're EV or ICE. If the effect of bumping up fuel duty is merely to shift people over to EVs then it's not solving the problem.
Bumping up fuel duty SHOULD be thought of a lot more carefully, AND explained carefully by Government. It should never be a means of raising money for the Government to spend wherever it likes, it should be ring-fenced to help people to move around more efficiently, and sold to the public accordingly. Reducing congestion would do wonders for the economy, accident reduction would be a much needed reduction of the burden on the NHS, everyone would welcome a reduction in their car insurance premiums, and reducing pollution has self-evident benefits.
How would increasing fuel duty achieve this? Well if done thoughtfully enough, people would think about their means of travel more, simple as that. A ring-fenced increase in fuel duty would enable the provision of more buses/trains/trams etc, PLUS the subsidising of taxi fares to assist those with less easy access to public transport. This would be of particular benefit to the elderly who still drive - often at great risk to others (as accident statistics will testify) - and causing congestion as they're often (understandably) slow. They could be helped enormously if taxis were more affordable and readily available for them.
Many people say they would use public transport if they could, but they own a car because they can't. Then, when they make trips where they could actually use public transport, they use their car simply because they already have it. And when they do already have it, in their minds their trip suddenly doesn't cost them any depreciation whatsoever, nor wear and tear, nor fuel because it's already in the tank, congestion is just accepted (often by the same people who cite train delays as the very reason they don't use them) and parking charges somehow seem to be just accepted aswell. Even if any costs are considered, well for them it's all worthwhile in order not to have to sit with the hoi polloi on public transport, and that bag which can often be carried fairly easily, suddenly becomes a huge deciding argument for taking the car. I'm generalising, but there is quite a bit of truth in this.
So much of this (not all, but quite a lot) is down to a way of thinking. Not so many years ago huge numbers of people said we would never stop people from smoking, or drinking and driving. Okay, these things still happen, but there has been a big cultural change. NOTE:- I'm not even remotely suggesting that people shouldn't own and drive their own cars, I just think there is scope for people to be encouraged to think more carefully when they do, because there really are many benefit to be had by reducing our car-worshipping mentality a bit.