Almost ready to make the full transition to city life and get rid of my car, need advice. I have been in town for a year, and don't plan on traveling out of state as often as before, so I have decided to sell my car.

What are the best places to get cheap (free?) ads up for my car? I plan on using craigslist, but I wanted to know if there were any other good local resources that I should check out. 

Along the same lines, any great success or horror stories about selling a car in Chicago?