The stores in the US mostly have metal "Cart Corrals" where you return the cart. They send out someone to collect them every now and again. This keeps the cart

The stores in the US mostly have metal "Cart Corrals" where you return the cart. They send out someone to collect them every now and again. This keeps the carts away from the cars, so you don't get dents. But of course, there's always a few lazy people who just leave them all over the place, or (my favorite) launch them towards the corral and turn their back and walk away as the cart careens off-course. Aldi's system certainly encourages "correct" behavior, but I'd rather not have to take the cart all the way back to get my coin. Especially in a parking lot the size of the typical Costco or Walmart. I'd just hand the cart over to the next arriving customer so I can leave quicker.