Had my brother and cousin in the car the other day. My brother wanted to write down a song but didn't have a pen. So what does my cousin do: pull one out of her purse and write it down. I look back there and she still has the pen in her hand. Before I can say something she moves her hand up and of course hits the headliner with it. Nice little ink line up there on the grey headliner of my Magnum. As you can imagine I was very pissed. Stopped by a local drug store and picked up FOLEX carpet spot cleaner. And hard to believe, but after a dozen aplication/blots, the ink was gone! I have used it for a spot on the sun visor before and have to say this stuff works great. So if for any strange reason you ever have to get ink (or other tough stains) out of the interior, Folex is your friend. Have started to use it inside the house now, too
I got it at Long's Drugstore. I think Safeway and Home Depot carry it, too. Here is their website: www.folex.net. It is water based which I guess is supposed to be a good thing