Tracked Shopping Carts?

 Somewhere in Wuxi, there is a supermarket where the shopping carts don’t have fixed back wheels.  That is, the back wheels spin like the front wheels. I learned about this when I was accompanying someone on a beer buying odyssey. This someone complained about it and asked me if I hated it as well.  I had to confess that I had never noticed, never thought about it, and that furthermore, I usually let my son control the cart.on family shopping odysseys.

So, the next time, I went on a shopping trip, I had to check out the back wheels of the cart.  I didn’t want to feel like I was blind to something.  I even took a video and sent it to that someone.

The rear wheels were fixed.  That turned that someone on! 😛

Which leads me to wonder why there aren’t tracked shopping carts, like a tank is tracked.  It’s a useful innovation that the Chinese are capable of like all those mop and pail combos my wife buys.