There are many great EV cars. But when you have a trailer or caravan we still talk about a heavily reduced range (and often they aren't allowed to pull at all, or weight limits get a problem, at least in Europe)
Gas vehicles suffer from that range reduction, too, as my brother-in-law learned the hard way last weekend during a road trip we took to Idaho and back (wherein he was towing a camper-trailer).
The interesting thing in the US is that a lot of pickups, possibly most of them, are purchased for regular daily driving. None of the people I know with pickups have trailers.