And lets not forget those of us who want to go on holiday. Every hotel/B&B etc will require a carpark space for every room, and each space will need a hook up. Every single camp/caravan site will need an additional hook up for each pitch.
Channel ports/Eurotunnel will need mutliple hookups before/after each crossing as I imagine many will be on the limit by the time they reach them. Airports will need them too. It's going to require a massive amount of investment to support tourism.
