In 2015, 260 million American vehicles traveled 3 trillion miles and consumed 173 billion gallons of fuel.13 It’s 3 trillion miles of frustration: congested roads force Americans to waste 5–7 billion annual hours in traffic, at the cost of hundreds of billions of dollars in lost output, wasted fuel, and accidents.14 Given that America is a car culture and will remain so for decades, it’s frustrating that the roads are so inadequate.
