Warren Buffett’s 2006 Cadillac attracted a high bid of $122,500, more than 10 times its market value, in a charity auction that concluded on Thursday night.

The autographed DTS sedan, with 20,310 miles (32,685 km) on the clock, was auctioned on the website Proxibid. A spokeswoman, Dana Kaufman, did not immediately identify the winner. Proceeds from the auction will go to Girls Inc of Omaha, Nebraska, the city where Buffett runs Berkshire Hathaway Inc . A longtime favourite charity of the 84-year-old billionaire, Girls Inc offers educational and recreational opportunities to girls in the United States and Canada.