Thoughts from the road
As you probably know if you've ever driven on an interstate, usually whenever there's an exit sign on the right, there's a corresponding sign on the left telling you where the continuing freeway goes. "280 San Jose", or whatever. When I was driving in Southern California this weekend, I was inordinately amused when I found myself on 605, and those signs read "605 THRU TRAFFIC". The freeway wasn't actually notable for going anywhere, it was just there to carry traffic. I think there's some kind of deep social commentary to be gleaned from this.
On another note, my luck finally ran out and I got a speeding ticket. Oddly enough, despite my having pondered this very question often while driving, I still was momentarily stymied when the officer asked me if I knew how fast I was going. Part of it was that I actually didn't, since I didn't have my eye on the speedometer at the moment, and part of it was that I was trying to figure out what the best answer was. Finally, I figured that I probably shouldn't say anything over 90, and I wasn't sure anything under 90 was plausible, so I settled on that and hoped it was actually accurate. He seemed to agree, so I guess I was right.