I came across this tweet by Sean Galbraith last night. You will probably need to click through to see the full extent of the photos. It is a series of images showing two back-to-back houses. The lands touch one another. But if you were to drive from one house to the other, it would take you about 18 minutes because of the area's road network. Approximately 7.1 miles.

This, of course, is far from urban. It would take over two hours to walk this same distance (assuming an average walking speed of 1 mile every 18 minutes). If you're an urbanist, this is surely galling to you. But I think it's also important to remember that this is, at least partially, a result of a consumer preference for dead end streets that limit through traffic.