When you coast up to a red light (timing it perfectly) but when it turns green the stopped person in front of you refuses to go instantly leaving you really angry.
When you get excited about caravans on the highway.
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Most of my trips are made in rush hour traffic to and from school.
When drafting a trailer tent on the highway you see this incoming vehicle in your rear view mirror and you say out loud: "goodbye trailer tent...hellloooooo winnebago!"
When you don't like other people driving your vehicle mainly because they end up messing up your best tank ever (one on which you think you can hit your goal of 30 MPG) in a 20 mile trip.
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Most of my trips are made in rush hour traffic to and from school.
YKYAEI
...you're kneeling in front of your car in the driveway making a grille block when you overhear your two sons comparing the aerodynamic qualities of their matchbox cars.