@cstross Have to wonder what's going to show up to tow it.
@graydon Just adding that "can't park there, mate" has become a catch-phrase on /r/Edinburgh, usually relating to photos of cars with drivers who blindly followed their Satnav and drove onto the top of a staircase …

@cstross Got that bit!

Parts of the western US there are are active freight lines down city streets plus there are semi-fossil rights-of-way still on streets that are not used very often but the clearances are maintained against the day. This looks like one of those; someone missed a switch, and it's very possible that they really don't want to run the whole freight wherever this bit of track is going. ("The factory that was there closed down in 2003" sorts of circumstances.)

@graydon @cstross That's Jack London Square in Oakland. It's the main southbound freight route for all the cargo coming out of the port of Oakland (and also Richmond and some points further north), and also one of the most heavily used Amtrak paths outside the North East - San Jose to Sacramento goes through there, as do the Oakland to central valley trains, and even the Coast Starlight from LA to Seattle. It is, uh, disconcerting to be driving down there with a freight train in the mirror.