Lateonenight,amysteriouscarisbroughtintotheChicagopoliceimpoundgarageafteradeadlytrafficaccident.Theon-callmechanicssoondiscoverthecarhasamindofitsown.Withhundredsofhorsepowerandtwotonsofreinforcedsteelatitscommand,it'saseeminglyunstoppablekillingmachinecapableofoutrunning--andoutwitting--humans.