It looks like a fun book geared towards an unusual audience. I shouldn't buy it, but if it gets a nice comment in this thread, well... maybe I need it.
It's, I'd say the first, a Weinberg textbook on the undergraduate level. I started to read it and on the one hand I like it, because it's very clear concerning the physics. On the other hand I was a bit disappointed, because it's not of the typical Weinberg style with the ideal mixture between providing historical insight in an introductory chapter but then exposing the physics from a modern state-of-the-art point of view emphasizing the logic of the theory in a deductive way. Here, for my taste, he overemphasizes the historical approach a bit too much, but it's still a very good introductory undergraduate-level text on "modern physics".