As far as luxury cars for famous writers go, an A5 is both sporty and stealthy without being over-the-top. Though we think he'd be better off with a STaSIS Audi S5 we applaud him for not just buying a Lexus hybrid.
It's at this point we'd like to remind people B.J.'s father, William Novak, was the ghostwriter for Lee Iacocca's autobiography Iacocca which, we think, led to Michael Scott raising a glass and erroneously toasting "To Mr. Iacocca and his failed experiment, the DeLorean" in an episode of The Office. Hilarious.