Highway to Hell appears as a set of four protrusions with miniature propellers on end that jut out of the medium that McQueen uses to attempt suicide. The same four protrusions appear in the same location as his victim to denote the shared injury.
Shared Injury: When McQueen attempts to kill himself, he can also make someone die in the same way he does. No matter the circumstances, whatever harm McQueen faces will end up happening to the other person in the same way. In other words, McQueen must kill himself in order to kill his opponent, though hardly does so solely for that motive.