21 Road Trip Podcasts That'll Make You Want to Keep Driving

"Serial" began as an offshoot of "This American Life," and takes a season-long, rather than episodic, approach to storytelling.

Each season covers a different story with the same investigative journalism approach, and so far, the themes have ranged from the 1999 killing of an 18-year-old student in Baltimore County; the story of an American army sergeant held for five years by the Taliban; the Justice Center Complex in the Cleveland area; and the history of Guantanamo Bay. If you're looking for a deep dive for your road trip, this is it.