It is not an excuse, as is quite obvious that trying to obtain data along a common baseline for electricity or EV sales is not a trivial task. So given the number of EVs in UK, admittedly not many suitable to tow your caravan, why is it a waste of money? Or are you just intent on stoking up another extended thread that eventually has to be locked. There are two pre owned ones near to us, with sensible mileages at below £9k ,that quite frankly would make excellent second cars, or first cars too. for new drivers, or pensioners runabout.