Something really odd just happened to me - pulled up next to car in supermarket carpark - saw the car next to me with the window down a little bit. There was a young boy with a dummy - between 2-3 years old left in the back of the car. The boy looked fine, not upset and the car was clean but AIBU to think that its completely irresponsible. The car was parked about 30 metres from the storefront and I stayed for a while to see if parents were perhaps just dropping the trolley off but they weren't. I reported to customer service and then when I got back to my car half hour later it was gone. I'm not usually one to get involved but it didn't sit well with me.