I don't see any evidence from personal experience that "car-light" or "car-free' people are healthier. Maybe you have not spent a lot of time riding buses? or seem big fat guys riding their undersized WalMart MTBs to the liquor store carrying big bags of McDonalds?

Unless you have Serious data ... claiming car-light folks are healthier is pretty much totally your fantasy ... at least in my experience.

maybe Wealthy car-light folks are healthier ... but most car-free and car-light folks are the economically underserved, in my experience. Walking from McDs to the bus stop doesn't foster "health."