"A common political argument is that bike and transit riders should "pay their own way." A study in Vancouver however suggested that for every dollar we individually spend on walking, society pays just 1 cent. For biking, it's eight cents, and for bus-riding, $1.50. But for every personal dollar spent driving, society pays a whopping $9.20! Such math makes clear where the big subsidies are, without even starting to count the broader environmental, economic, spatial and quality-of-life consequences of our movement choices. The less people need to drive in our cities, the less we all pay, in more ways than one."