What are these at the SFNE site?

http://www.sixflagsnews.com/sfne12-8e.JPG at my first glance I got scared and thought they were flying trains! But after a closer look I think they're the retracting floors for the Floorless coaches. What's your opinion?
-----------------
"I’m more than a bird..I’m more than a plane...More than some pretty face beside a train...It’s not easy to be me"-Five for Fighting "Superman" dedicated to all of the hardworking rescuers of the WTC...

if they are retracting floors, it looks like they're upside down.  am I seeing this right, or are my eyes failing me?
-----------------
Knott's Berry Farm Cuba ~South Park

They look like retracting floors for a floorless. If I'm looking at this right, it looks as though the floor panels are what the assemblies are resting on and the mechanisms to raise/drop the floor are in the air. It's kind of hard to tell since the picture isn't all too clear.

-------------
How can you be scared when I'm the one that has to go potty!?

Coasterjedi, I think, in fact, they are upside down. The grey box looking things might be the mechanical stuff and the purple sides might be the base of the machine. That's just my two cents (hehe, I've always wanted to say that).
-----------------
"I’m more than a bird..I’m more than a plane...More than some pretty face beside a train...It’s not easy to be me"-Five for Fighting "Superman" dedicated to all of the hardworking rescuers of the WTC...