When I first got my car about 3 years ago, I got the paint and interior Teflon-coated for $100. I've spilled Coke, bongwater, blood, etc. on my seats and the floor and it all wipes up even if you leave the stains on there for months. I just spent 2 minutes wiping up a bunch of old ground-in dirt stains on the passenger and driver's side floor with a damp sponge and got all of the stains off with minimal effort. Best investment in this car I ever made.... 
