A FAMILY ROAD TRIP IS SUPPOSED TO BE A LOT OF FUN . . . UNLESS, OF COURSE, YOU'RE THE HEFFLEYS. THE JOURNEY STARTS OFF FULL OF PROMISE, THEN QUICKLY TAKES SEVERAL WRONG TURNS. GAS STATION BATHROOMS, CRAZED SEAGULLS, A FENDER BENDER, AND A RUNAWAY PIG - NOT EXACTLY GREG...