Next is another behind the scenes video from Swggrwag0n. His first one proved the security truck was a Decepticon and showed some of the prep that gets done to put a scene together. Part 2 continues that from "Hotchkiss Gould Investments" aka the local 7/11 on Wacker. The scene seems to involve a little crowd panic as police and firefighters respond to probable TF related chaos. Thanks to Sam for the link.
For whatever reason a week old video about Rollbar that was first posted on Seibertron and here is making the rounds as new, such as on Trailer Addict. Having said that, turns out MischiefChavez has posted a second video this time with a piece of heavy artillery in the back that is probably perfect for a scene with NEST soldiers.
Last, but not least, a reminder that Van Buren Street will be closed from Monday to Wednesday as Transformers 3 production moves to the Old Post Office. The production will be working from 7AM to 10PM with the expectation of pyrotechnics going off. Thanks to ZzTopeurope for the reminder.
Update: Added 3rd video below that breifly shows Rollbar driving by on his huge wheels. (via the Movie Chronicles)