There was an older couple of ladies behind me in line at the supermarket making goo-goo eyes at the baby. When we were outside, one of them informed not in those precise words that I was handling the unloading process wrong.
My process is: Take the cart to the car, unload the groceries, return cart, take baby from cart and carry her with me back to the car.
Her order was: Put the baby in the car, start the car with the air conditioning or heater on, unload cart, and then return the cart.
When I was small enough to ride in the cart, there was no chance the parents would leave me in the car for more than a couple of seconds: I’d lunge for the controls. And there being nothing even close to child restraints in those days, I’d almost certainly reach them.