I have for many years carried cheap plastic table clothes ($1 from the Dollar Tree) in the trunk of my car.
*They are put to many uses. My boys played football so on those muddy days after practice I would put them over the car seats and floor so they had a place to sit without getting the car dirty.
* On rainy days getting groceries you can through one over the cart so the groceries do not get all wet walking back to the car.,
* They have been used to put on the ground if you need to change a tire.
* Can be used as a rain cover.
* Cover the wind shield putting part in each end in the doors to cover the window to help keep ice from window.
The list can go on. so that is why I always keep 2-3 neatly tucked away in my truck of my car.