I've had a good look around my local area and very few of the cars have any visible rust. We have a fairly mild climate in South East England but we do use salt on the roads in winter time.

Of the two vehicles with any noticeable rust, one is a '05 Mercedes Sprinter, these seem to be predisposed to rust. The other was a T registered (1999) Land Rover Discovery but even that has obviously been modified for off-road use so it's hardly fair to include it.

I wonder if this is climate related or US cars are not built with the same rust treatment.