Comment by citrin_ru

Public transport (especially trains) is very expensive in the UK. If you already have a car it's cheaper to use car even if you're traveling alone. For two it will be more than 2x cheaper than a train. If trains will be affordable I'm sure more people would use them. As to the size - during relatively good pre-COVID times SUV become popular but not many Brits can afford large vehicles today and on average cars in the UK are much smaller than in the US, I would not say it's a big problem.