While the story below didn't occur in a car, I think that the lesson I learned may be useful for others for interiors. I recently spilled coffee all over a custom made microfiber lounge seat at my place and effectively ruined the thing. There was a giant black stain over half of the chair and I wasn't sure what to do. I called the carpet cleaner that has looked after the furniture and carpets in my parents house for 2 decades and explained the issue to him. He gave me some Chemspec Spray 'N Go and promised it would do the trick. The results were amazing! The chair is spotless and back in the living room. MY only regret is not taking before and after photos. The process was simple. 1. Mix the powder with hat water. 2. Spray evenly onto the stain 3. Agitate with a toothbrush 4. Use a wet cloth to pat around the spot to prevent a watermark around the cleanup area. 5. Vacuum when dry. Out of interest, what do you guys use to get coffee out of cloth? Anyone else work with the Chemspec before for car interiors?