Day 290/365: Supermarket Cart / Trolley Ride History. Thanks to Goldman and Watson!

Have you ever try riding a Supermarket Cart? I bet you do! This is the kid's favorite ride whenever we are in Supermarket. And would you know how much each cost? Based on Alibaba.com, the price range is from USD18 to 50 depending on how many you need, and there are different designs to choose from too, by size and color. But who invented this nice supermarket ride though? As the Google tags say so, it came from Uncle Sam! and the evolution of how it became a "Supermarket Cart" of today is way back almost 100 years ago.