There's talk of making the bays bigger because of the fire risk too.
Personally I'm yet to be convinced of the environmental benefit due to the cost of manufacture (in environmental terms) for electric cars. Keeping in mind the UK market hasn't yet got a cheap electric city car with four seats.
We did look at replacing mine with an electric two years ago.
The numbers didn't stack up. A low mileage efficient city car was working out comparably to a large electric which I would struggle to drive (I'm tiny and find visibility an issue in most cars which are designed for the average male size). The outlay was more money than we had and we were reluctant to do finance.
There are a couple of new models of electric cars that fit into the cheap city car market that look set to hit the market in the next two years. I think they are ultimately the game changers. The price point will drop enough for people wanting a small runaround as a second car. That will in turn help to improve the infrastructure.
In terms of infrastructure, the government needs reform on charge points. At the moment public ones need planning permission. For each and every one. That adds cost and beaucracy so also makes them unattractive.
I think it will change. But I'd argue that our attitude to cars generally needs changing too. People want these huge SUVs and people carriers - which they just don't need. Or use maybe once or twice for a family trip (it'd be cheaper to rent for one off trips than spend thousands more on a bigger car).
Cars are seen as status symbols not functional devices. That's what needs tackling next.