The 7/11 location is also the same location of the pictures with Patrick Dempsey looking dangerous with a gun. As the second video shows, he is not a friend of Shia's Sam Witwicky since the two seem to be duking it out on top of the debris which matches with the other pictures of the two climbing on roof debris as Shia lays out on the ground and Dempsey looks into the air. The last video is what any video set for Transformers 3 needs - an explosion. That was filmed at The Park at Lakeshore East a day or so ago.
The last bit of news is info on where to find TF3 production which is scheduled to end on August 19th. According to the On Location Vacation an upcoming location is "at 35 E. Wacker Drive (the old Jewelers' Building) and will close portions of Wabash and Wacker on July 31 and August 1st." The site also provides a few details on Ron Howard's The Dilemma which will be filming in the city. Thanks to Sam for armored car link, Chris for the fight video link and Ray for the explosion and location links.