DeLorean time machine DeLorean time machine The DeLorean time machine is a fictional automobile-based time travel device featured in the "Back to the Future" franchise. In the feature film series, Dr. Emmett Brown builds a time machine based on a DeLorean DMC-12 car, to gain insights into history and the future. Instead, he ends up using it to travel over 30 years of Hill Valley history (from 1985 to 2015) with Marty McFly to change the past for the better and to undo the negative effects of time travel. One of the cars used in filming is on display at Universal Studios Hollywood
Time travel physics. According to the philosophical theory of compossibility, what "can" happen, for example in the context of time travel, must be weighed against the context of everything relating to the situation. If the past "is" a certain way, it's not possible for it to be any other way. What "can" happen when a time traveler visits the past is limited to what "did" happen, in order to prevent logical contradictions. The Novikov self-consistency principle, named after Igor Dmitrievich Novikov, states that any actions taken by a time traveler or by an object that travels back in time were part of