See, I purposely do not park near the cart returns. I've seen too many times people 'push' the carts back to the returns, only they let go about 5-10 feet from the space and the cart slams into the car parked right next to the cart return. (I used to work at a grocery store)
Plus, an added bonus to parking further away (if physically possible) it makes you walk further, hence burning a few more calories. Bob and Jillian would be proud!