When the first shopping cart was introduced, the store had to hire actors to push them around because people hated them!

Sylvan Goldman first introduced the shopping cart on June 4th, 1937, in the Humpty Dumpty supermarket chain in Oklahoma City. His spirits soon had a great fall. Men found the device to be too feminine and thus refused to use it while women refused because they thought the carts too closely resembled baby carriages. Many offended women informed him, “I’ve pushed my last baby buggy.”

Goldman had to actually hire both male and female models to push his new invention around the store to demonstrate and explain it's utility. Eventually, a child’s seat was actually added to it. Overtime, the shopping card rose in popularity and Goldman became a multimillionaire.

(Source)