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From supercars to underwear: Check out the perks that come with these mega-mansions

Ray Parisi

In the super-competitive luxury real estate market, sometimes you need to supercharge your marketing strategy, literally. When Douglas Elliman real estate broker Senada Adzem recently listed a 12,778-square-foot waterfront mansion in Del Ray Beach, Fla. for $13 million, she revved up the deal by adding 3,000 horsepower. The five-bedroom, seven-bathroom fully furnished residence comes with a 660-horsepower 488 Ferrari Spider (manufacturer's suggested retail price of $350,000) parked in the garage and a custom-built 2,508 horsepower Midnight Express power boat on the dock.