Corrected entry: Near the end, when Needles challenges Marty to a street race, the smartest thing for Marty to have done was nothing. By speeding away in reverse, he could have just as easily hit another car behind him, with the subsequent chain of events leading, more or less, to the future that Jennifer witnessed in 2015.
Cubs Fan
21st Sep 2023
Correction: Well, Marty didn't know about that future anyway, as Jennifer never told him she found out what caused his failure. Him reversing is a lot more like a definite change in character for Marty, rather than an attempt to change the future. That's what the scene was about. Next to that, he quickly spins the car around without coming to any intersection, so no immediate danger of running into someone.
lionhead