Sounds like fun, Scott. Most kids will be fine on the front of a shopping cart. Unfortunately, one or more will eventually fall. When they do, the store may be sued, and the blow from the impact of the linoleum covered concrete slab in the store to the head of a child may also give them permanent brain damage. I know I can't protect my daughter from everything, but she has just as much fun pushing the cart as she would on the front. Call me a ***** if you want, but I don't want my daughter to be drooling incoherently for the rest of her life.
Here are a few links. 24,000 plus injuries? Just something to think about. Love ya, Scott!
http://www.cpsc.gov/cpscpub/pubs/5075.html
http://aappolicy.aappublications.org...rics;118/2/825
http://pediatrics.about.com/od/hidde...opping_crt.htm