Grocery shopping

Just a quick vent - I think the next time that I take both kids grocery shopping, I am going to employ several sherpas, some pack mules, and pack enough to mount a week-long expedition. It;s not that the local mega-store is exceptionally large, it's that my kids both want to steer the cart, in opposite directions, neither of which is the direction in which we need to go, and, when they are not fighting over the steering, they are treating the cart as though it were some sort of primitive trampoline.