[Neil]

Yes they are. How can a Government that is committed to be green and saving the planet allow such vehicles on the road.
Cars should have a max limited horsepower depending on the vehicle type. My large ish estate is 110bhp and is more than powerful enough for anything you would need it for. It towed a car trailer with the same car on the back which was about 400kg over weight on the motorway above the limit of 60mph with relative ease so would pull a caravan at max weight no problem. When we go camping it is full to the gills and tows a small trailer like it is not there. Why would it need to be more powerful?
I am also in agreement to speed limiters on cars as well.