A legendary 1969 Porsche 917K, once owned by Hollywood icon Steve McQueen and currently in possession of comedian Jerry Seinfeld, is set to hit the auction block at Mecum's Kissimmee event last Saturday. The car is tipped to become the most expensive Porsche ever sold.

Jerry Seinfeld could've broken an auction record for Porsche if he decided to sell the coveted vintage car for a whopping $25 million at the Mecum's Kissimmee auction

Bidders and spectators were left shocked Saturday when a $25 million bid went unaccepted by Jerry Seinfeld, who refused to part with his 1969 Porsche 917K. If the offer was accepted, the quarter million dollar sale would have been historic for the Mecum Auctions,

Porsche 917, which was owned by and driven by Steve McQueen in the film Le Mans, was put up for sale at Mecum's Kissimmee auction - but Jerry Seinfeld decided against selling.

The car has been owned by Porsche collector and sometime comedian Jerry Seinfeld since 2001. He is an avid fan of the brand and has owned dozens of the marque’s models. The 917K

And "the bid goes on." After Saturday's event, that's how auction house Mecum tagged the Porsche initially purchased by famed actor Steve McQueen and later acquired by Jerry Seinfeld that was offered for auction in Florida.