Proactive passengers realize that the only way a car will make it to its destination is if they take the bull by the horns. They have strong leadership, delegation and non-verbal communication skills.
The Proactive Passengers know they are in the best position to surveil, assess and provide assignments to the driver. Additionally, they are responsible for navigational tips and secondary hand gestures/menacing looks. The driver, or control twiddler, should focus on basic essentials of threat reduction, navigation and other driver antagonism.
Proactive Passenger traits can often lie dormant for years surfacing only when a spouse and/or loved one takes the wheel.
My wife was pissed at me for ensuring we got here tonight, she doesn't realize the value of a Proactive Passenger.