[Origami]

@GooGuy
As I pointed out earlier, the main difference between the lightning hitting the DeLorean in part I and part II is that in the first film the DeLorean actually doesn't get hit by lightning.
The lightning rod directly 'channeled and harnessed' the lightning into the flux capacitor.


@Shadowknight

Yes, I agree. As the flux capacitor is directly responsible for displacing a molecular structure through time, it could easily be accepted that doubling the energy needed for the Flux Capacitor to do this could result in sending the same molecular structure into two times at the same time.