Auctioning off a Ford Mustang seems to be a pretty effective way to raise money for charity. The very first Shelby GT was auctioned for $600,000 at Barrett-Jackson in 2007, and the first GT500KR sold for $550,000, both raising money for charity. The latest 'Stang to raise money for a worthy cause is the one-off AV8R Mustang that crossed the block last week at the EAA (Experimental Aircraft Association) Gathering Eagles charity auction and brought down the gavel with a final bid of $500,000. The unique Mustang features a 400-hp supercharged V8, Ford Racing suspension upgrades, and an aviation-inspired paint scheme plus much more. Worth half a million? Maybe not, but definitely a great way to donate money to charity.