Rewrite the sentence and fix the grammar mistakes. screams, laughs, and complaints originating from the back seat much to those in front’s dismay added flavor to the otherwise boring migration of cars.

impartial means: treating all rivals or disputants equally; fair and just.

i would say that impartial is agreeing with something, because impartial means to treat your rivals, arguments, and reasoning equally and fair. so if you rival says something, agreeing on it means you did the impartial.