For what it's worth, I took a drive by the Oceaneering facility in Maryland today. For those who didn't know, the vehicles for Spider-man and Transformers were fabricated there.
Anyways, I noticed that they are still renting out a larger facility across the street from their main facility. A few years ago I was told that the only reason that facility was rented was to fabricate the (original) batch of Transformers vehicles for Singapore and Hollywood. The back doors were open, which suggests that something is going on in there now. I couldn't see inside, but it doesn't appear to be as big of a project as the original batch was. Being big on manufacturing defense stuff, it would make sense to keep this facility for their amusement ride fabrication.
Point is, they are renting this building because they need more fabrication space. But the original reason was to build the Transformers vehicles. I would think they would need lots of space to crank these things out to get the ride open by Holiday 2013.