Screen Rant

  • Doc Brown is a notoriously clever guy... 1 / 8

    Christopher Lloyd as Doc Brown in Back to the Future pic vertical

  • But surely even he couldn't build a steam train time machine in the 1880s. 2 / 8

  • The Back To The Future comic books plug this plot hole. 3 / 8

    Back To The Future 3 train vertical

  • Doc used Marty's hoverboard as the basis for his technology. 4 / 8

    Back to the Future 2 Hoverboard Vertical

  • Giving the train enough juice to hit the time travel barrier. 5 / 8

    Doc Brown Back To The Future comic vertical

  • Doc could then access technology in the future and make his train hover. 6 / 8

    Back to the Future Car Vertical

  • The explanation might be a little far-fetched... 7 / 8

    Back to the Future III Vertical

  • But it fits perfectly within Back To The Future's rules of time travel. 8 / 8

    Doc Brown Back to the Future Vertical