what material does the machine need to travel back to the future
DeLorean time machine The time machine is electric and requires a power input of 1.21 gigawatts (pronounced "jigowatts") to operate, originally provided by a plutonium-fueled nuclear reactor.[3] In the first movie, Doc has no access to plutonium in 1955, so he outfits the car with a large pole and hook in order to channel the power of a lightning bolt into the flux capacitor and send Marty back to 1985.[3] During Doc's first visit to 2015, he has the machine refitted to hover above ground in addition to standard road driving, and he replaces the nuclear reactor with a Mr. Fusion generator that uses garbage as fuel.[3][4]