a killer be dispatch the patron of the local drive in with a sword . head be slice off and neck be slash and other various body part be impale . two inept detective be try to solve the case . drive in massacre be an abysmal slasher flick direct by porn director stu segall . there be some bloody killing and but the gore effect be crude and amateurish . the pace be slow and the acting be painfully bad and the synthesizer score be beyond awful . easily the best thing about this insanely rotten piece of fester cow dung be it short running time . the only way to enjoy drive in massacre be to drink lot of alcohol . negative for provide me a few laugh .