Well depends on whether they were the types that would walk/run/ride their nearest hill every day ;D Most sensible people drive (because steep hills are steep and tiring!) and you'd only walk as a mode of transport if you were a fitness buff/liked walking/didn't have your license/a car/people that could drive you.
Even when I go back we'll be out going somewhere and we'll see this random car parked out on the side of the road somewhere because the driver has gone to that particular hill and are now going for their daily exercise which is a walk/run up/down the hill away from the car and then back again.
I was definitely a lot fitter when I was living there than here anyway and not just because I was a reasonably active kid once XD
Hahaha, cars kill everyone's fitness. I was a monster when I had to ride my bike everywhere... even up the crazy hills.
I thought the same about Wellington, everyone must be so fit just walking up that hill all the time.