There have been many hypotheses on why Millennials are driving less than previous generations—from their digital devices replacing cars to their financial burdens preventing car ownership. But a new analysis is here to settle the debate: it’s a little bit of everything. According to a transport scholar, 10-25% of the decrease in youth driving is changing demographics, 50% is changing attitudes, and 40% is an overall downward shift in U.S. driving habits. (City Lab)