It will be interesting to see how things progress though, Walter.
It could change Camping charges (scuse the pun) a bit. Now, people get charged maybe a few quid for their site pitch plus electric hookup.
If these vans arrive and use £30 of electricity overnight as they re-charge, the site owners may have to be very vigilant and charge extra where necessary.
Maybe they will have to all get individual electricity meters or something, so they can pay by usage,
Great idea though.