We haven’t yet mapped out the time travel itinerary.
INDEXER NOTES (SPOILERS!)
Credits—are not in the film, but are in the credits pop-up at <a href='http%3A%2F%2Fwww.collegehumor.com%2Fvideo%2F5905742%2Fback-to-the-future-sex-scenes'>College Humor</a>