Rhino Lined Mini-Van

We have four kids and they have done a number on our mini-van.  The kids have spilled a number of liquids, ground in solids and drawn in marker, crayon and pen all over the place.  I think the answer is to spray the whole thing with a heavy duty truck bed liner.  You could mop or sweep up the floor messes and you wouldn't care if the kids drew on the bed liner.  On top of all that, how many mini-van drivers do you know that use the things to haul stuff you should only haul in the bed of a truck anyway?