About the baby at the supermarket... wouldn't you want to put the baby in the car first, so that if your shopping cart is grabbed -- or starts rolling downhill by itself -- while you're not attending it, you still have the baby?

I guess the ideal thing would be to restrict one's shopping-with-baby-along to one light bag's worth of food, so that the baby and the food can go in the car in one go.

But any way you do it, there's still that moment of opportunity for the thief, when you're fiddling with the #@%& car seat while your butt protrudes out of the rear door, instead of looking for someone coming up behind you.