This photo on Curbed seriously made our afternoon. Apparently, a long-time Curbed lurker discovered this rooftop streamliner while doing a building inspection for a housing project in the Tenderloin. Blogger 40Goingon28 confirms it's located at the 100 block of Turk Street. Another Curbed commenter speculates that "All you need is an airsteam and a crane" to pull off this feat. See this beauty from another angle.

[Via Curbed, 40 Going on 28]