I like these brief overviews on a wide variety of cars. And I like that the focus is on car tech, more than just the cars overall. There's plenty of other sources out there if all you care about is engine specs, handling characteristics, and 0-60 times. Brian Cooley is a knowledgable and likeable host. And for a free video podcast, CNET's Car Tech Video has excellent production quality (read: not ghetto). The episodes are short, typically 2-3 minutes each, but they get down to the nitty-gritty, without boring you with mundane details.