It has a lot to do with pedestrian safety
If that was a real concern then maybe cars shouldn't be used at all? What makes being hit and killed by a car 'acceptable'?
Who said that killing people was acceptable? There are approximately 3000 deaths on the roads each year and whilst this in itself is reprehensible, whats startling is that the cost of these to the British economy is nearly £8bn.
You're quite right, the number of cars on the roads does need to be reduced and we need to look at alternative methods of transport to facilitate this. 58% of car journeys are less than five miles and 25% of trips made are less than one mile, as a keen cyclist that statistic disgusts me. We're a country facing an obesity crisis and a doubling of fuel prices over the past 10 years and yet still people cling to their cars like limpets, its actually rather worrying.
Regarding the TVR vs 4x4 question though, all I was saying is that if you have
to have a car, maybe you should go for the safer option as a method of damage limitation?