Phooey.
But it made me think about the way that rail's visibility is both a blessing and a curse.
1. Predictability
My favorite thing about trains is that you can see the tracks.
It means that you know or at least have easy access at immediate street level to three key pieces of information without needing to be told:
1) where the train will come (these tracks)
2) where it might go (do the tracks turn or split?)
3) where it will stop (the visible station/stop)
This is vital information and making it very obvious reduces friction in using transit. So does an even more important point I'll label
0) that there is a train line at all.
For a bus, all of these but #3 are difficult to communicate, and in some cities (including most of the Quad Cities) even that one is not well communicated because there are small or nonexistent bus stop signs.
For a train they're not necessarily 100% obvious but they're at least partly visible. And that leaves just the frequency and connectivity as key elements in transit use you're not able to instantly see; big elements but much better situated than a bus.
2. Lies
Unfortunately, a visible rail line is a real problem if it's not actually served by rail. This can happen when rail service is discontinued entirely as in much of the US. It can happen as it has in Toronto right now for the 509 streetcar just temporarily. But it leaves you with a very visible marker of everything above that is lying to the potential rider.
This happens on the big scale (no trains!) and the smaller scale (the rail replacement bus doesn't run exactly where the train did because roads and tracks aren't interchangeable).
It ranges from a minor inconvenience (oh, there's the replacement sign, just on the corner!) to a major one (shoot I have no idea where to go) to a huge one (I am put off from using any transit now!).
3. Opportunities
But overall I'd still say track is an advantage, because you can always rebuild, replace, return to service. I'm mildly inconvenienced right now (the kids probably think more than mildly since we have a lot more walking now). But the line will return and the high rise buildings serving transit demand will keep going up. Even where there isn't transit or is bad transit right now, a rail line can always become an advertisement for its own services. And that's a good reason to build rail and to keep it in service.