Exactly. And depending on the kids, you could also make it a small, fun activity for them: help daddy/mommy/whatever you have your kids call you bring the cart to where it should be. It'd be no different from having the kids put their toys away, but just with something that may be beyond their strength, but you're an adult, so just pull the cart from the side enough to help the kids move the cart and steer it to avoid hitting stuff.

If the kids are tired, have em just walk like 30s more? If you can't even do that and your kid starts throwing a tantrum, then you have other problems with the kid and so you deal with it like you're supposed to anyways. The kid isn't going to just turn responsible without the parent doing something after all.