If you are a huge Transfan, then Day 1 in Chicago for Transformers 3 production has already set your heart a flutter as Optimus Prime has his trailer again, complete with G1 shaped striped and Autobot logo. On top of that fans have already supplied pictures of Ironhide, Bumblebee, the red Ferrari 458 Italia, Ratchet three fully weaponized Nascar vehicles (Stunticons?), likely the Twins and more. In addition, thanks to Jeffrey, we have images of a Chicago street dressed for war, or at least its aftermath. Below are sample images, and a YouTube video. For more images and videos from the Transformers invasion in Chicago hit the links below. Thanks to Katie, Christopher, and cypherXR for the links.