In "Batman Begins" (2005), Bruce Wayne utilizes the prototype vehicle known as the Tumbler designed by Wayne Enterprises' Applied Sciences Division as a bridging vehicle for the military. It includes weaponry and the ability to boost into a rampless jump. The Tumbler's armor is strong enough to break through concrete barriers without sustaining significant damage. Two full-sized driving versions were used in exterior shots while another full-sized model with hydraulic enhancements was used in jump sequences. A further full-sized, functional version carried propane tanks to fuel the rocket blast out of the rear nozzle. A radio controlled, 1/3-scale electric model also performed stunts in the film including the roof-top chase sequence. Six vehicles were built for the production of the film.