04 Crossfire Milage -300
 

My wife and I have an '04 Crossfire and we love it most of the time. We bought an extended warranty that would only activate after 1 month and 1000 miles; unfortunately the car is giving us trouble adn we're 300 miles short of activating the warranty. It's been 3 months, but the miles aren't there.
I have dealt with the warranty company adn they will not budge of course so my question is this...

How can I run the milage up on the odometer? I tried raising the rear end off the ground and letting it run in gear, but this added nothing. Which wheel needs to turn or is there linkage that I may be able to access and use a drill to run up the miles? This sounds terrible to do, but we want to drive our car, but we also don't want to break our bank fixing what will no doubt be an expensive repair.