I've now tried this myself and it works. Not to mention it is cheap as hell!
Take an apple, cut it into 1/4s and place them inside the car. Put the car in a dark place where you can leave it for an extended period of time, roll up the windows and let her sit. I would think the longer the better, but just guessing. I let mine sit for about 2 days, drastically reduced the smell.
Even if it doesn't, your out maybe $1 or $2.
