Casey Putsch built a Batmobile powered by a turbine engine(385-horespower Boeing turboshaft engine) from a naval helicopter. It features a custom tube frame/monocoque chassis with fully independant suspension, disc brakes, and a sequential shifter. It runs on kerosene, diesel, or Jet fuel and has a power to weight ratio comparable to a Dodge Viper. Despite being 20 feet long and 7.5 feet wide, the Batmobile is completely street legal. He also made the sound system iPod-compatible and added an iPad to his dash to function as an avionics system and GPS navigator.