The 1963 Batmobile is shown in this photo released by Heritage Auctions, HA.com December 5, 2014. The earliest known officially licensed car of comic book superhero Batman is up for auction on Saturday. The 1963 Batmobile is believed to be the first custom car to be licensed as Batman's swanky ride and could fetch up to $500,000, according to officials with Dallas-based Heritage Auctions. The opening bid is $90,000. (Photo by Reuters/Heritage Auctions)

The 1963 Batmobile is shown in this photo released by Heritage Auctions, HA.com December 5, 2014. (Photo by Reuters/Heritage Auctions)

The 1963 Batmobile is shown in this photo released by Heritage Auctions, HA.com December 5, 2014. (Photo by Reuters/Heritage Auctions)

The engine of the 1963 Batmobile is shown in this photo released by Heritage Auctions, HA.com December 5, 2014. (Photo by Reuters/Heritage Auctions)

The 1963 Batmobile is shown in this photo released by Heritage Auctions, HA.com December 5, 2014. (Photo by Reuters/Heritage Auctions)

The 1963 Batmobile is shown in this photo released by Heritage Auctions, HA.com December 5, 2014. (Photo by Reuters/Heritage Auctions)

The 1963 Batmobile is shown in this photo released by Heritage Auctions, HA.com December 5, 2014. (Photo by Reuters/Heritage Auctions)

The 1963 Batmobile is shown in this photo released by Heritage Auctions, HA.com December 5, 2014. (Photo by Reuters/Heritage Auctions)