You can't stop boomers buying SUVs. It's as much as a status symbol to them as Adidas trainers are to kids (I might be showing my age here do kids still care about Adidas?).

Tax the fuck out of heavier vehicles. Put that money back into the roads. Why most of the inner city streets needs a mini tractor riding up and down them is beyond me. But it's not going to stop. So deal with the problem better.