Board Thread:Questions and Answers/@comment-26145952-20150225172722/@comment-26066301-20150226020612

There's a theory she could have been referring to the roller coaster on Coney Island called the comet. It's is seen in the mutation situation episode on the t rawket. (Donnie built it out of a roller coaster car which may have come from the ride.) Though I don't think that would be it, since there is the question of how Karai would know the turtles would know what she was talking about. Personally, I just think it's the name of some abandoned factory where she's been living since the invasion, or her mutation. (Which was approximately 4 months ago) One that we haven't seen yet.