While you're dragging your feet through security at LaGuardia, only to sit in a crowded terminal for two hours smelling stale McDonald's and Dunkin Donuts, Justin Bieber is busy being driven to his private jet with his family. The Cessna Citation X, which he is using through XOJET and begins at $21,000 per flight, is known as the fastest private business jet on the planet. And while passengers can work inside, the 72-foot jet's Rolls-Royce engines are roaring through the air, speeding you one mile per six seconds. That comes out to a four-hour flight from N.Y. to L.A. After the pictures of Bieber above, you'll see general photos of the luxury interior in the X.