I went to the shop today.
Another man was parking his car near where I was parking. When I got out of my car, I noticed that he'd left the engine running. No passengers in the car, and the car park was fairly busy with cars and pedestrians coming and going. He was queuing for the cashpoint, and I'm guessing planning to leave in his car straight after that - but why leave the car running? He'd even reversed into the space to make leaving the car park faster.
It surely only takes a few seconds to turn the engine off and take the keys with you, and a similar amount of time to insert the keys and start the engine once you're back in the car. I just don't get why he'd leave the car running - even if he's not bothered about the possibility of car theft, it's still wasting fuel.
AIBU and overly judgey here?