Thanks for the tip wizard, I think I will give this one a try. I had a pretty good experience with using a harness in the car until the day we had to leave Chance in the car for a couple of minutes.
We saw a boston terrier running loose on the street by our house, so I stopped the car and went to rescue her before she got hit by another car.
While we were trying to capture the boston terrier, Chance was getty impatient in the car, so he chewed through the seatbelt first and then the harness, because I think he somehow got tangled in it while trying to see whats going on outside. Now I only have one seatbelt left to try a new harness on.
For long trips he rides in the crate.