The original Batmobile from the 1960s television series has sold at auction for 4.2 million dollars (£2.6 million).
A spokeswoman for the Barrett-Jackson Auctions in Scottsdale, Arizona, said the winning bidder has not been disclosed following Saturday's auction.
The 19-foot-long black, bubble-topped car was used in the Batman TV show that starred Adam West as the Caped Crusader.
The car's owner - famed auto customiser George Barris, of Los Angeles - transformed a one-of-a-kind 1955 Lincoln Futura concept car into the sleek crime-fighting machine.
On the show it boasted lasers and a Batphone and could lay down smoke screens and oil slicks.
Mr Barris' publicist said his client is pleased with the auction result.