If you're in the mood to miss your flight out of Bozeman or sit around the gate area for an extra 45 minutes before your flight - ask a local what time you should show up at the airport. There's a very decent chance they'll give you crappy, non-detailed, and not particularly accurate advice.
ANYONE can be a passenger in a car going from point A to point B. But being a respected, reliable, interesting, tough, practical, funny, and calm road tripper - that calls for a Montana girl if you want the best. There is no better kind of person to travel with on the road.