Petra, Bernie and Tamara Ecclestone

Petra Ecclestone is the daughter of Bernard Charles Ecclestone, better known to the motorsports world as Bernie. Mr. Ecclestone is the president and CEO of Formula One Management, and his reported net worth is around $1.5 billion. Petra must get to play with a fair amount of that cash, because she just bought the most expensive house in the United States.

Originally listed at $150 million, the Holmby Hills mansion is a 57,000-square-foot property that includes a bowling alley, salon and 100-car garage. It was built by the late TV Producer Aaron Spelling, and his wife has since downsized to a 15,500-square-foot condo.

The home has been listed since 2009, and the asking price stayed at $150M despite the economic downturn. That makes sense, seeing as most people who can afford the property most likely managed to "stay afloat" during these rough times. Petra is one of those people, and it's been reported that her first offer was $75 million. The actual sale price hasn't been disclosed yet, but the deal is in escrow.

The large estate will serve as Petra Ecclestone's Los Angeles home base. She also owns a six-story London home, which cost $90.9 million. It would seem that F1 is a good business to be involved in.