I loved the multidisciplinary approach. It jumps around from stuff that's going on inside our brains, to the differences between various commuting cultures, to the nuts and bolts of civil engineering. It confirmed a lot of my suspicions about traffic while teaching me new stuff at the same time.

I'm usually pretty conservative with my ratings, but I had to give it the 5th star because of its applicability. It's something that most of us do every day, but there aren't many books on the subject.