I drove around in a Volkswagen Rabbit I shared with one of my roommates, and it didn't have a roof. It doesn't rain much in L.A., but when it did, it was utterly miserable.
I don't happen to think magazines should be full of thin people. What I do say is that we can all work a little harder with what we have. It is possible to achieve a better body shape and heart rate with nutrition and exercise.