If, like me, you grew up in an itsy-bitsy northeastern state and then moved to a similar one, you get used to seeing a road map on which places with a bit of distance between them are not so far to drive to in real life. Then you try driving in New Mexico or Saskatchewan or wherever and places fairly close together on the map take quite a while to drive. This road atlas is the cure. All the maps for the western U.S. are to one scale, all the maps for the East are to a somewhat finer scale.
In addition, there are maps to an even finer scale for the Northeast Corridor, and many cities have maps, some an entire page. Canada, Alaska, and Mexico maps also appear.
I find leaping across the spiral from the left-hand page to the right-hand page a little troublesome, so you may wish to consider the non-spiral version.
For certain areas, say Rhode Island, of course the more traditional road atlases will have more detail. There's no reason not to have two or more atlases from different publishers a few years apart.
There are some inaccuracies. For example, in Maryland, highway 28 now meets highway 198. The Ronald Reagan Presidential Library doesn't appear. In Vincennes, the Old Cathedral Complex is shown vaguely to the southeast, but in reality it abuts the National Historic Park to the north -- the same mistake appears on one of the competitors' maps; hm.
All in all, this atlas will be quite a pleasant addition for the next road trip.