You can probably fill a bookcase or two with books like this. They pop-up in tourist souvenir shops everywhere, aimed at a general readership and most of them are easily forgotten. I bought this one mainly because of the large size though the photo quality, overall, is average and the page design is bland and predictable.
However I think there are good points: the coverage is rather comprehensive, from the Hollywood sign, Randy's Donuts in Inglewood, Los Angeles, Haines Shoe House, York, Pennsylvania to the Cadillac Ranch in Amarillo, Texas. These are all sort of American national treasures and there are plenty more in the book, as large photos, too. Americana in the title helps define what should be included though that also raises the question: just how tacky and temporary can a structure be before it's not worth including, fortunately not too many here fall into that category.
If you can find it cheap enough this isn't a bad buy (at the original price I would have definitely passed) but if you like this sort of roadside exuberance check out Jim Heimann's lovely California Crazy (ISBN 0811830187) David Graham has done four roadside books and the leader of the pack John Margolies has several books. Ones I've enjoyed are: Fun along the highway and The end of the road.