Westlake's Hot Rock hotshots consist in this hilarious heist, of three low-keyed crooks, a young ex-F.B.I. man mainly eased out because of his insistence on a secret G-man handshake, a black Movement aesthete and safe cracker, and two unlikely molls -- a supermarket checker and an elderly mother who wears a neck brace for insurance-sake. The job involves abducting a bank on wheels, a temporary facility parked in a L.I. shopping center. A veritable traffic jam of vehicular disasters and wilted cops with a splash finish. Calamitous, cinematic and very, very funny.