I guess we're assuming that you have a cloth (non-leather) interior.

The best stuff I've found is RESOLVE carpet cleaner. Buy it anywhere...grocery store, walmart, etc..

Let it soak for about 5 minutes or so, then take super hot water and scrub it out. Wipe off the foam, scrub again, wipe remaining foam, blot dry. It should clean up perfectly!

I love my Contour to death, but my 'vette is still my #1 baby.
There's money to be made in racing. I should know. I put a lot of it there.
You can make a small fortune in racing. Start with a large one.
How fast do you want to go...how much money do you have?
You can fix a lot of things, but you can't fix stupid!