Auction houses selling rare and expensive collector cars are usually teeming with excitement, but at Gooding & Company’s 2015 Scottsdale Auctions in Arizona this weekend, there was an extra layer of celebrity buzz when comedian Jay Leno rolled out his prized 2008 Dodge Challenger SRT8—with all proceeds benefiting the USO.

Rare and exotic Ferraris sold for multiple millions, but the highlight of the auction was Leno’s Challenger. The crowd roared as bidders competed for the patriotic prize in the one of the most exciting bidding displays Gooding & Company has ever seen.

The bidding started at $50,000 and when the auctioneer finally dropped the hammer at $360,000—nearly 10 times the car’s blue-book value—USO President and CEO Dr. J.D. Crouch II, present at the event, was filled with pride. The entire auction house stood for applause. However, the giving wasn’t done. Nobody was prepared for what happened next.

“After the car sold, one of the men who lost the bid for Leno’s car stood up and offered an on-the-spot cash donation for the USO—he would match anyone’s donation up to $100,000,” said Crouch.

Paddles began flying and within moments, another man committed to donate the full $100,000. Additional donations kept rolling in to the tune of $5,625, which meant that thanks to Jay Leno and other generous supporters, the USO would receive a total of $565,625!

This isn’t the first time Leno has flexed his charity muscle for the troops. In previous years, he has dedicated his annual Love Ride to the USO, and just two months ago, after returning from entertaining troops on a USO tour in Afghanistan, he joined the TODAY show to “Shine A Light” on troops back home by gifting another of his Dodge Challengers directly to a wounded soldier.

“We’re overwhelmed by the response that we got from those who attended the auction,” said Crouch. “The funds raised here will go far to advance our goals of expanding our services to men and women in uniform.”