I think it's very much worth mentioning running costs are nothing like what they seem.
Comparing the cost of electricity for EVs with the cost of petrol/diesel for ICEVs is missing the fact that about three-quarters of the cost of petrol/diesel is tax.
At the moment, the government can let ICEVs run tax-free without any significant loss of tax revenue. That would change if ICEVs became more than extreme rarities. I think it extremely unlikely that they would simply ignore the huge loss of tax revenue, so in one way or another the running costs of ICEVs would rapidly be increased by taxation in order to maintain tax revenue.
Then you need to take battery replacement costs into account, because batteries lose capacity with every charge cycle.
If you do a like for like comparison using Li-ion batteries, the running cost for an electric car is much higher than for a comparable ICEV car, so much so that it's cheaper to replace the engine in the ICEV every few years.
Then there's the issue of generating capacity. There are serious questions about the UK being able to meet current use in 5 years time because too many current power stations are due to close before new ones are due to open. Widespread use of EVs would massively increase the amount of electricity needed.
But in a fictional situation where there is spare "clean" electricity, where EV running costs are much lower than ICEV running costs, where I have a garage to charge an EV in overnight, where battery packs can be quickly swapped, where EVs are the same price as comparable ICEVs and where EVs have a boot like comparable ICEVs, I'd definitely have an EV. Although the loss of the glorious noise of some ICEVs would indeed be a loss.
I looked for this thread because I've just seen some claims about the Tesla Model S. 45 minute charge time...battery pack swap as quick as ICEV refueling...£35K price tag...I'm far from convinced those claims can be true.
