For this challenge, you simply have to use a Shopping Cart.
Shopping Carts can be found in various places around the map.
See below for locations.
- You just need to use a single Shopping Cart one time.
- Shopping Carts can be used by 2 players: first player pushes the shopping cart, and the other rides inside. For the purpose of this challenge, though, you don't need another player, just push the shopping cart yourself and the challenge will complete.