Flickr: Eisenhower Interstate System in the style of H.C. Beck’s London Underground Diagram
At least this map isn’t quite as distorted as the DC metro map, but I see e.g. it has Schenectady closer to Syracuse than Albany, and the route from Albany to Boston as a straight line, as one should expect of a schematic map, where your lines are limited to the eight choices at 45ยบ
I’ve long despised the DC Metro map, because it was useless to me the first time I needed to get around while visiting; the cabbies were on strike, and I was forced to use plan B, except I had no plan B at the time. The schematic layout made little sense to me as I wasn’t familiar with the geographical layout of the city.
See Beck’s Tube Maps