Sometimes it's almost ludicrous. The other day i was in the little nearby town of Etna waiting to bring home one of my children frome a piano lesson when a car stopped outside the local post office and a man about my age popped out and dashed inside the store ( and left the engine running -- something else that exercises me inordinately ). He was inside for about three to four minutes, then came out, got in the car, and drove exactly 16 feet ( i had nothing better to do so i paced ot off) to the general store next door, and popped in again, engine still running.