DeLorean Time Machine with Lights - 3D Printed

History After purchasing the DeLorean (it is unknown who or where Doc bought it from) and modifying it into a time machine, Doc tests it out by using a remote control to send it one minute into the future with his dog Einstein in it, leaving its license plate behind. He also shows Marty the major functions of the DeLorean: the flux capacitor, the time circuits, and the plutonium chamber that powers them. After refueling the time machine with plutonium stolen from Libyan terrorists (who previously stole the plutonium from a power plant), Doc prepares to travel into the future, but the Libyans unexpectedly arrive and kill Doc. Marty uses the DeLorean to flee from the Libyans and is transported to 1955 after accidentally activating the time circuits, but without the plutonium that is needed to power it. Once there, Marty flees from Old Man Peabody (who thinks he's an alien) and stops in an undeveloped area. Due to problems with the starter and with the plutonium chamber empty, Marty is forced to hide the DeLorean behind a sign and cover it with branches to keep anyone from seeing it. Marty later shows it to 1955 Doc, who then has it brought back to his workshop. At one point, they had to cover the DeLorean with a tarp to keep Lorraine Baines, Marty's future mother, from seeing it.

Unable to obtain plutonium, Marty and 1955 Doc (after reading a 1985 flyer that Marty had with him following his trip to 1955) decide to harness the power of a lightning strike that will happen one week later to power the flux capacitor in order to send Marty back to 1985. Doc installs a cable leading from the top of the Hill Valley Courthouse (which is where the lighting will strike) down to the street as a means to harness the lighting strike and attaches a long pole and hook to the DeLorean to channel the lighting strike into the flux capacitor once the hook makes contact with the cable while the DeLorean is accelerating at 88 mph. He also places an alarm clock on the DeLorean's dashboard, which is set to ring to signal Marty to drive towards the cable at 88 mph. Doc brought the DeLorean (still covered under the tarp) to the Courthouse to make preparations. While doing this, a cop nearly discovers the time machine before Doc stops him, pretending that it is specialized weather sensing equipment. When the plan is put in motion, complications arise due to the DeLorean undergoing another starter problem and the cable being disconnected by a fallen branch. Despite these major setbacks, the plan succeeds, sending Marty back to 1985 ten minutes before his original departure; Marty had reset the DeLorean to return to 1985 earlier so he'll have a chance to warn Doc of his upcoming death since 1955 Doc wouldn't listen to Marty's warnings. This event resulted in two DeLoreans existing in 1985 at the same time: one used by the first Marty to escape from the Libyan terrorists and then disappearing to 1955 and the other appearing with the second Marty following his trip from 1955 to 1985.

After returning to 1985, the DeLorean once again suffers another starter problem, forcing Marty to run to where Doc and his other self is. He arrives too late as Doc is gunned down and watches his counterpart escape to 1955 in the other DeLorean while the Libyans crash into a photo booth, but it is revealed that Doc's death was averted since he had listened to Marty's warning after all. After recovering the DeLorean (which apparently had its starter fixed) and taking Marty home, Doc travels to October 21, 2015, with Einstein, where he upgrades the DeLorean with 2015 technology (replacing the plutonium chamber with a Mr. Fusion Reactor, outfitting a barcode license plate on the back, and giving it the ability to fly), but briefly returns to 1985 to pick up Marty (who brings his girlfriend Jennifer Parker along) and get him to help stop his future son from committing a crime. While there, the DeLorean is stolen by Biff Tannen (who discovers that it's a time machine), who then travels back to November 12, 1955, the same day as the climax of the first film, to give his past self a sports almanac to be used for gambling. Once Biff returns to 2015 without Doc knowing, Doc, Marty, Jennifer (who has fallen unconscious after seeing her future self), and Einstein return to 1985, but find themselves in an alternate timeline where Hill Valley is ruled by Biff that Doc described as 1985A (alternate 1985). Because of Biff's tampering, the time circuits has malfunctioned, displaying random dates. After learning of 2015 Biff's actions, Marty and Doc travel back to 1955 to restore the timeline.[3] Upon arrival, the DeLorean is hidden behind the same sign that Marty hid the DeLorean in the first film. During the mission, Marty had to wait for 2015 Biff to return to 2015 in his DeLorean in order to retrieve the almanac without 2015 Biff knowing and to prevent further changes to the timeline. Doc later uses the DeLorean to pick up Marty (accidentally switching on the malfunctioning time circuits) and chase down Biff, where they recover and destroy the almanac, but Doc is unable to land the DeLorean due to strong turbulence. It is struck by lightning again in the very same electrical storm, this time by accident.

According to writers Bob Gale and Robert Zemeckis, the lightning causes the DeLorean to spin at 88 miles per hour,[11] and Doc later states in a letter to Marty that the bolt caused a gigawatt overload which shorted out the time circuits and destroyed the flying circuits.[4] The lighting strike causes the DeLorean to disappear from 1955, travelling back in time to January 1, 1885 (earlier in the film, Doc mentions that the time circuits are not functioning correctly; several instances in the film that show the destination time circuit displaying January 1, 1885 as the destination when the time circuits malfunctioned).[3]

Once in 1885, the DeLorean is hidden in a mine because suitable replacement parts to replace its destroyed microchip will not be invented until 1947 (presumably referring to the transistor, invented in that year). 1955 Doc and Marty recover the DeLorean from the mine and 1955 Doc builds a vacuum tube circuit assembly to replace the destroyed microchip circuitry and restore the vehicle's time travel capabilities. The tires have disintegrated in storage, so 1955 Doc replaces them with whitewalls. The gasoline engine is still functional, but the flying circuits are not.

Due to the events in all three films, a total of four DeLoreans existed at the same time in 1955: the first in 1955 Doc's lab (taking place during the events of the first film), the second hidden somewhere by 2015 Biff after stealing the DeLorean in 2015, the third used by Doc and Marty to travel to 1955 and undo the changes caused by 2015 Biff, and the fourth hidden in the mine after Doc is transported to 1885.

In a letter Doc wrote to Marty in 1885, Doc states he is happy in his new life there and requests that Marty not attempt to retrieve him, but instead to return to 1985 and destroy the DeLorean, believing that it has brought them and the world nothing but disaster. However, Marty and 1955 Doc learn of the tragedy that will come to Doc's way when he is murdered by Biff's grandfather, Buford Mad Dog Tannen, on September 7, 1885; therefore, 1955 Doc agrees to send Marty back to 1885 to rescue his future self. This resulted in two DeLoreans existing in 1885: the one hidden in the mine after Doc is sent to 1885 by the lightning strike, and the one that Marty uses to travel to 1885 to rescue Doc.

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