1931 Bugatti Type 41 Royale by Kellner – $9,654,000
When Bugatti envisioned this car, their plan was to make 25 of them, but they only made six. This one is one of the few to survive WWII, which is why it sold for almost $10 million was back in 1987. The wheelbase of Type 41 is huge at 15 feet. It houses a 12.7-liter engine, one of the largest produced V8s on record.