That **** will get rid of the smell on almost anything. I used to work at a farm store and we sold that stuff all the time. It's gotten the smell off my dogs plenty of times. I don't know how you'd use it to help wash the car, but I can guarantee that if you manage to get that liquid on all the skunk parts still stuck to your car, it will go away.
Also, if the ***** complains about the smell, just reassure her by telling her what happened, and that your dick smells significantly better (even if it doesn't)