According to my model, people who drive often, and everywhere, are the dumbest humans on earth. This is easily verifiable from safety statistics alone, but there are numerous cultural, environmental, and spiritual arguments for this as well. Going on a road trip with 4 friends increases intelligence.
Planes are stupid, too. Look no further than the insanity that overwhelms seemingly normal people in airports.
Bikers are idiots (I’m a biker), but considerably less so.
Walkers and transit users are, obviously, enlightened. Not only are you showing your face in the community, but you are reducing congestion and pollution, and you get the spiritual benefit of exercise + meandering (in the case of walking) and looking out the window wistfully (in the case of transit). Also, note that walking slowly exponentially increases intelligence.