The Truckasaurus is a truck/dinosaur that first appeared in "Bart the Daredevil". It was created by Professor Frink, as referenced in The Simpsons: Hit and Run (although in the episode Leo G Clark identifies himself as the owner, inventor and operator of Truk-o-Saurus). It is 20 tons and four stories of car-crunching, fire-breathing, prehistoric insanity. Truck-o-Saurus starred in a movie called Truck-o-Saurus: The Movie, which starred Marlon Brando as John Truck-o-Saurus. Brando's voice was impersonated. Truck-o-Saurus was inspired by the real life robotic dinosaur, Robosaurus. It ended up in The Auto Graveyard, where it fell into the hands of Bart Simpson, who accidentally turned it on, causing it to run amok in Springfield. It walked into Springfield Harbor and was never seen again.