The lone remaining Auto Union D-Type, surmised by many to be the most valuable car in the world, failed to sell at a closed-bid auction that was finally held by Christie's Auction House in late February-early March. The car was expected to go for around $12 million USD before it was yanked off the block by Christie's to further research its history. It was found that this Type D was not the one originally thought to have won the French Grand Prix, but another car with a less illustrious racing history. Though Christie's didn't think the revelation would alter the value of the car considering its rarity, apparently bidders disagreed.
Christie's stopped accepting bids for the auction on March 4th, though it won't release the number of bids that were given or the highest amount. At this point, we suggest using eBay Motors to unload this thing. The header could read "Rare Audi D Type – LOW MILES, CLEAN CARFAX".
Thanks for the tip, Peter!