One town police officer pulled over two cars driven by employees of the same Montauk restaurant on Sunday morning and arrested both drivers. One was charged with felony drunken driving, the other with driving with ability impaired by drugs. Officer David E. Martin Jr. was in the parking lot of the Montauk train station a little before 11 a.m. when he saw a 2013 Nissan pull out of the lot by Ciao, a new restaurant where its driver, Matthew R. DiGirolomo, 22, of Whitestone, is employed as a waiter.