Good point - I found this a confusing analysis without digging much into what it was saying - Urbana and Athens were high on the list...why? Do they have public bus systems that students use extensively? If so, that would tend to give a false impression of how much public transit is used there. I liked that he later pulled apart the small and large cities, but it would have been nice to understand what the data was saying in the context of the cities it examined.

Your point on Chicago is well taken - I was surprised to see SF/Oak ahead of it, as they "feel" harder to navigate with transit only, but I was forgetting that the suburbs are included in Chicago, which is basically impossible once you leave the city limits.