My Vibe GT wasn't doing that well at the autocross, and in the stock class it was tearing the edges of the new tires pretty badly. So, I've been on the lookout for something cheap enough to use as an autocross toy.
Yesterday I found it, and tonight I drug it home:
I was totally impressed by the Vibe GT as a tow vehicle. It made the 56 mile freeway trip in 5th gear with the cruise set at 65, staying within +/- 0.5 MPH of the set point. Coolant temp varied from 185 to 190. The only complaint the car made was pulling away from a stop up the hill from the seller's house. Fuel economy dropped from my normal freeway commute 28.8 to 25.9 (only half the tank was towing, and half that was empty).
The Miata was adjusted on the trailer to give very close to 200 pounds tongue weight, and it was as stable as could be.
I wouldn't want to do this every day, but on occasion it can work very well.