OMG.. omg.. this would be so awesome... I don't have a Meijer anywhere near me tho! They have those shopping carts with the car on the front with a TV in it! You rent a movie for your kids and go shopping. Heaven!
This was one of the few articles I could find..
http://frontier.cincinnati.com/blogs/cincymoms/2007/01/kids-watch-tv-inside-new-grocery-carts.asp