seb4wd

Hi folks, i'm in the market for a nice used station wagon, and one of the features i want is some sort of plasticized cargo space. I want to be able to haul messy stuff (recycling, yard waste, etc) and not worry about messing up any nice carpeting. Does anyone know if i can buy an Outback or Forester, or some other Subaru station-wagon-esque vehicle with this feature? Or maybe there's an after-market add-on i could buy. Other stuff i'd want in the car are: 4 doors so i can stuff the kids in the back easily, and 4 wheel drive for the snow. Please help a clueless noob!