1960 Didia 150

The one off Didia 150 was built over a seven year period (1953-1960). The body was hand formed aluminum by Ron Clark. It was assembled by four workers at Clark Kaiser Customs. The total cost was $93,647. It was sold to the singer Bobby Darin for $150,000. Adjusted for 65 years of inflation that would be $1,620,000 in 2025 dollars. More information on Wikipedia.