The same is true, to a lesser extent, in most other US cities I have been in which have comprehensive light-rail systems. The one exception is St. Louis, Missouri. I don't know why, but their train system, while small, is quite nice. I consider this an aberration.
The DC metro is also very clean but kind of expensive.
A bit late response, but I find the ”cabs and public transportation” discussion very interesting. I personally think it is a spiral and that the environment affects the attitude of people stronger than one would think. For example, a team working in an old and worn out office is less likely to keep the desks clean and if one or two paper ball misses the trash bin, that’s still ok. When the office is renovated the behavior changes. Stockholm subway tried a program some years ago when they had problems with graffiti and general thrashing of the trains. As soon as a cart got so much as a mm of paint on it was taken out of service and cleaned. It worked and the problem went away. If 9 taxis are worn and ugly, the motivation to keep the 10th nice is quickly gone. If the cart is in good shape, the mental step to trashing it is bigger. Just my theory.
Naturally there are levels. I just bought a used car, a -06 BMW325 Touring and it is the nicest car I ever owned. To others, it is probably a beater. And then, of course, there are the situations when other things are at stake: Same chicane as the Volvos in the earlier post, but a bit more expansive:
I'm just wondering, on that X5, doesn't it have the accident logging? I know a lot of new cars will log what was going on just before an accident and that would show that they were in reverse when it occurred.
Just a thought in case you don't have a cam and it happens to you.