"Only if it turns out that reality is actually nothing more than a holographic illusion created by the interplay of subatomic particles on a vast two-dimensional membrane."
This article covers a subject that has been deemed non-canon by either the author or the Back to the Future licensees, and thus should not be taken as a part of the "real" Back to the Future universe.
The 1920s Chicago desk sergeant took the money from Doc Brown that he tried to use to pay Marty McFly's bail after Marty accidentally asked a police officer where he could find a drink during Prohibition in 1927.
The desk sergeant arrested Doc after he accidentally tried to use coins from 1985 to pay Marty's bail.
