Stream Mater and the Ghostlight Online Free – Watch Full Movie from Home at 123Movies. . Mater, the rusty but trusty tow truck from Cars, spends a day in Radiator Springs playing scary pranks on his fellow townsfolk. That night at Flo's V8 Café, the Sheriff tells the story of the legend of the Ghostlight, and as everyone races home Mater is left alone primed for a good old-fashioned scare.