Many of those "can't" won't have cars. 20% of households in Wales have no car.

Now clearly that 25% and 20% won't overlap exactly, but they will overlap a lot

When 80% of cars in the UK are electric and 20% are those households who rely on public streets to store their belongings for 23 hours a day, then sure that will be a problem

Given that there's only about 2 million electric cars in the UK, yet 18 million homes which can charge electric cars, that's a long way off.