Spree (2008)

Wes, Alex, Kevin, and Damien are four college roommates who are fed up with their current situation. The night before a road trip from New Jersey to California they decide the only way to relieve the stress of their everyday lives is to go on a coast to coast murder frenzy. The four disillusioned friends cook up a plan turning their trip into a murderous game, complete with rules and teams. The object? To murder one person in every state they enter. The prize? The winners walk, while the losing team must confess their crimes.