I've noticed that as a difference between Car People and Non-car People. The latter tend to have a backpack or other general-purpose bag with them at all times

I've noticed that as a difference between Car People and Non-car People. The latter tend to have a backpack or other general-purpose bag with them at all times containing wallet, keys, bottle of water, waterproof jacket, reusable grocery sack etc. After a while it feels naked to go out without it. Whereas Car People leave that stuff in the car or shove it into bulging pockets.