Rocker Bret Michaels and former pro wrestler Bill Goldberg have gone head-to-head before on shows like "Celebrity Apprentice." But at a recent Arizona car auction, the two celebrities had pride on the line as they each auctioned off two classic used cars.

The money from the auction went to the American Diabetes Association and the Juvenile Diabetes Research Foundation, so each wanted to see their cars go as high as possible.

Goldberg's customized 1968 Dodge Dart, complete with a 713 horsepower Hemi V8 engine, ended up selling for a whopping $92,500. Yet Michaels was able to best Goldberg, as his 1969 Chevrolet Camaro SS, couple with a signed guitar and lifetime backstage pass wound up fetching $200,000.

Bruce Steinberg, the owner of the collision center that rebuilt the car, told the Mason City Globe Gazette that he didn't believe the car would sell for that much.

"Surprised isn't even the word, more like shocked and overwhelmed," he told the news source. "We had an idea in our head how much it would go for, but not that."

Later, the two friends took to the stage in order to pump the crowd up for the big-ticket item, a brand-new 2012 Ford Mustang Boss Lacuna Seca, which eventually sold for $450,000.