This 1925 Rolls-Royce Phantom I Maharaja comes with its own big game guns. It goes up for sale on Saturday in Las Vegas. Barrett-Jackson Auction Co. hide caption toggle caption Barrett-Jackson Auction Co. The Two-Way For Sale: 1925 Rolls-Royce, Elephant Gun Included September 26, 2013 Built for an Indian maharaja, the car also comes with its own machine gun. It was taken on hunts for big game. The Barrett-Jackson Auction Company's annual three-day sale began Thursday in Las Vegas. The Rolls, which may fetch more than $500,000, goes up for bid Saturday.