Barrett-Jackson raised record amounts for charities at its 48th annual Scottsdale Auction last weekend. Some of the cars sold for charity include the first Ford GT Heritage Edition for $2.5 million, the first production Toyota GR Supra for $2.1 million, and the first production Shelby GT500 for $1.1 million.

Also crossing the block was a set of four Chevy Camaros used in the Transformers movie franchise. Although these Camaros weren't as valuable individually as some of the aforementioned cars, together they sold for a whopping $500,000 plus an additional donation of $25,000.

The money raised from the sale benefits Operation Homefront, which helps to "build strong, stable, and secure military families so that they can thrive in the communities they have worked so hard to protect." Unlike some of the other cars, these Camaros were sold with scrap titles, meaning they can not be registered to drive on the road.

"There are no words to express how blessed we feel to be able to support so many wonderful charity organizations," said Steve Davis, president of Barrett-Jackson. "You simply can't put a price tag on all of the good that will come from the millions raised to help our kids, members of our US military and first responders live richer, fuller lives. There's no doubting the generous spirit of this hobby when our consigners and bidders open their hearts to help where help is needed most."

In total, the 16 charity vehicles raised $9.6 million including additional donations made after the hammer. While the four Bumblebee Camaros may never be seen out on the road, they will look cool in someone's collection and could find future use as promotional tools. At the very least, all four do come with a V8 engine mated to an automatic transmission, so perhaps they could be driven on a private race track.