Then surely you can cite an example where the grocery store is responsible for any damage caused by carts in the lot ...
I can tell you how to win if you like. Just take a video/photo of the lot when the carts aren’t being properly maintained. Like when they are short staffed. Then present that at court and you’ll win.
If you go unprepared you’ll lose. The stores know a decent lawyer knows this and they will find a time when the store didn’t manage the carts properly so they just pay it. Instead of fighting it with legal fees only to gamble on “winning” where their legal fees will out weigh a scratch fix on a car.
Only if the customer is asking for a crazy amount do you fight it.