Changes

It's like the "warm" part of hitchhiking. What you see when you hitchhike during the day, after waiting a few hours outside in the cold, knowing that in half an hour, at the next [[petrol station]], you may wait for another few hours. It might well be that one falls asleep, or does not feel like getting off at the next petrol station, just going wherever the driver goes as to sleep a bit more and stay warm.