would be interesting to see vehicle age by geography. I suspect all the rural farmers are the ones skewing the average (it's not unusual to have a 20-30yr old truck out on the farm.. You can fix them with the same tools as your tractors).

And 6.6 years in Japan, in 2011: http://blogs.wsj.com/drivers-seat/2011/12/02/are-cars-losing... Americans do a lot of silly things but selling cars too quickly isn't one of them (relatively speaking, at least).