Let’s say you’re in the market for a house; what are your must-haves? More than one bedroom? A backyard? Or how about a champagne room — not just for storing booze, but a whole room designed to look like a champagne glass? Or a race car simulator? Those are just a few of the amenities in a new development called the Park Bel Air. The Park Bel Air consists of three mega-mansions laden with indulgent perks. It’s the latest in a series of supersize spec homes rising in Bel Air. What does this mean for the neighborhood, and L.A.’s real estate market in general?