This is exactly the kind of thing I wanted to do for common light goods vehicles in the UK - the Vivaro and Trafic vans. They are great apart from the gearboxes, and of course the engines are ICE. You could replace the engine and gearbox with a motor, and there's a HUGE amount of space under the van for a battery pack to give it a good range, with strong mounting onto the chassis possible. Lots of these vans do very little mileage, just working locally - think of the pollution that would be reduced in London, for instance.

The problem was that I priced it up, and it would cost about £20k for a conversion, which obviously isn't going to happen. If you could get it do say £5-7k, then anyone with one of these who's faced with a new gearbox being needed, or needs the injectors replaced and they're seized in place because the scuttle under the windscreen leaks water onto the engine (which can be a £2k + bill) might think it was worth doing.

However, I'm also sure that the insurance situation would need looking at - it's effectively a different vehicle and you've definitely had it modified.

Another one of my pie-in-the-sky ideas, but I'm sure it'll be financially doable at some point, and given that the Vivaro had a 12-year model lifespan and didn't suffer from rust, there are plenty of them about.