As someone who sometimes has to drive into the People's Republic of DC, it's my opinion that this is closer to the mark. The majority of the drivers there, regardless of vehicle type, are arrogant and rude.
You see the same effect on sidewalks amongst the pedestrians. In office buildings people arrogantly demand that crowded elevators be held for them, when there are five others available and one will arrive within 30 seconds. And I've lost track of the number of times I've seen subway riders risk life and limb trying to board departing trains, when another will be along in less than 5 minutes. The people who do these things are simply wound too tight, and taking away my SUV won't change that one bit.
Yeah, when I drive on the sidewalks, those pesky pedestrians get highly indignant! Ah, well, they wash off the undercarriage with a high-powered hose...