The shopping cart's design and function

In 1946, Orla Watson patented the "telescope cart" allowing them to slide together in horizontal stacks to solve the storage dilemma. Seatbelts were added to the child seats in the 1960s.

However, carts were often abandoned in back alleys, rivers, and forests, leading lawmakers to impose regulations and fines on businesses that didn't keep track of their trolleys.

Carts also became a symbol of urban blight and poverty, often used by homeless people to store and transport their belongings.