Why would we even ban SUVs or pickups? If you are concerned with global warming it seems to me that pollution should be taxed and if some people are still choos

Why would we even ban SUVs or pickups? If you are concerned with global warming it seems to me that pollution should be taxed and if some people are still choosing to do so they can. And then keep raising these goals so we get rid of inefficient SUVs. This is what EU is doing pretty successfully with the German car manufacturers being dragged kicking and screaming into making low polluting cars.