BRAINTREE — The lawyer for a Braintree man facing charges of impersonating a police officer for driving around a Maserati painted to resemble a police cruiser calls the case against his client "silly."Attorney Russell Matson tells The Patriot Ledger his client "never pretended to be a cop," and even told police in advance he was going to decorate his car to look like the character Barricade from a "Transformers" movie.