Even in Queens only a relatively small percentage of people own cars and even fewer use a car as part of their commute. Recent data indicate that less than 3% of low income workers commute by car. Your average outer borough janitorial worker is going to be taking a bus to the subway (though if citibike and some protected lanes were available I’m sure some would consider that option).

Washington Heights and Inwood are quite walkable and most people there commute by subway, without having to drive to it. The same goes for Crown Heights and Bed-Stuy.