Originally Posted by mrtimstik
See if you can go to a rent all place or disaster restoration company and rent an air purification product with an ozone generator on it. Getting a unit with this feature is very important. Place it in the vehicle with the windows rolled up and kept up and let it run a couple(2) days solid. The ozone will eradicate any organic smell inside the car. I guarantee it will smell unusual during this process but when all is done the mouse smell will be greatly diminished or gone. Please read up on this process if you have any questions of it's effectiveness. It will work if you have the correct equiptment.
mrtimstik has it. Our dog got hit by a skunk once and the wife let it in the house not knowing! In seconds the whole house was lit up with the smell, along with me who had to get the dog out. I brought home an ozone generator from work ran it on the dog and in the house for a couple of days. Smell gone, didn't think it would work but it did.