The motivation for the customer to return the Shopping Cart is that, upon returning it, they receive digital bonus points or coupons as part of a customer loyalty program.
It is also possible to associate the return of the Shopping Cart with a good deed. Many projects can be imagined that can be supported, from climate-neutral shopping to cancer aid. In the end, everyone benefits: the charitable project, the customer who organizes their shopping cart with the awareness of doing something good, and the retail sector, which enjoys a tidy parking lot.