I want this on a huge print and I want it now:
The Eisenhower Interstate Highway System in the style of H.C. Beck's iconic London Underground map. Whoo doggies is it a nice'un. State highways and three-digit routes are not included, which is why cities like Pittsburgh aren't represented (I-79 runs thru Pittsburgh, but it intersects with I-76 well north of the city.)
But just LOOK at it! Dear God, just LOOK! That's cool!
It's fascinating to see the changes of density between the East Coast/Midwest and the West Coast/Rockies. (The Density Disparity?) It's no surprise at all, but fascinating. Somehow the way it's presented as simply as it on this map turns out to be really effective.