Not sure, but it certainly sounds like it. Same engine revs and high-pitched throttling that it can't be anything else. The shit just reverberates between the two peaks.
Can't tell if it's a cycle or cars though. Probably some fucked up Civics. Probably a smart place for two miles of straight racing, admittedly.
a roof of a house..kinda dangerous because i was working from the attic and some colleagues down stairs kept warning me that the ceiling is moving at my steps..the thing is you need to walk always on the beams when you're in situations like that.