Photos of Cardington Hangar from BOF. Looks like some things are happening over there: http://www.batman-on-film.com/TDK-Ca...1_4-19-07.html
Willy Wonka in Gotham? He does have some similarities to the Joker. Perhaps something to do with a plot of his? Or maybe it's just there to supply the crew with some candy.
Anyway, this was what the scooper said:
From scooper "Big Jim":
"This morning, I took some quick photos of the exterior of the Cardington Sheds. As you will see from the pictures attached, I managed to get shots of a SWAT van outside the sheds, but also managed to capture a suprising addition to the vehicles parked outside. It looks like three Wonka vans parked close to each other. What are they doing there?"