Moments later on, Biff comes into the house carrying a box filled with copies of George's very first printed e-book, the deal with of which resembles Marty's physical appearance in the radiation fit. Doc and Marty immediately protect the DeLorean with a tarp ahead of allowing Lorraine in. A very long rod hooked up to the back of the DeLorean will channel the power from the bolt right into the flux capacitor.