The podcast episodes provided cover various aspects of transportation policy, including the history and impact of the Interstate Highway System, the role of state and local authorities in transportation planning, the use of congestion pricing to manage traffic, and the shift towards sustainable transportation options like electric and autonomous vehicles.

For example, the episode 'Highways Are Horrible For Climate Change. How Does The Problem Keep Expanding?' examines the unintended consequences of highways and the growing movement to prioritize more sustainable transportation solutions. The episode 'New York's U-Turn on a Plan to Reduce Traffic' explores the debate around congestion pricing, which is a transportation policy measure aimed at managing traffic and promoting alternative modes of transportation. The episode 'Ep. 37: Revolution on the Road: The Shift to EVs and Self-Driving Cars' discusses the importance of proactive government policies to steer the deployment of self-driving vehicles towards sustainability goals.