I finally decided that it's time to sell the Mustang and buy a new car (except I did it in the reverse order).  Jill let me use her Chrysler discount on a Dodge Charger that I found in Port Huron!  Actually I got a pretty good deal because this Charger was a demo car for someone at Chrysler for a few months (it only had 3,000 miles on it!)  Anyway it's definitely a nice upgrade from the Mustang - it has so much more room!