If you live in New York, Illinois, or Pennsylvania then you may be able to get a free car wash or interior cleaning from Delta Sonic Car Wash. We don't have one near me, but someone on here will probably find this deal useful. Sorry, can't post the link since I am not at 15 posts yet (maybe someone else can post it). If you Google Delta Sonic Car Wash it will pull up though. Just go to their "Join Our Email Club" page.
Now if I could only find a car wash near me offering a deal like this. My car is in desperate need.