
Factual error: The Mountain Dew logo seen in the stadium didn't come out until 1980, despite the film being set in 1973. The changes made in 1980 were subtle, but still distinct, especially the loss of the "wave" in the "D" and the smaller hole on the "a."
Chosen answer: Quicksilver in the comics listens to music at super speed because his mind always works that fast. Presumably, it's the same here.
Greg Dwyer