First up some images were posted on Flickr from the Aerospace Maintenance and Regeneration Group (AKA The Boneyard).  This was then followed up by an anonymous post made to Seibertron.com which also included some images of the Chevy Volt and Sideswipe.

Shortly after Jalopnik posted some imags which appear to confirm that the Chevy Beat will be Skids.  How does it confirm this, you may ask, well the pictures include a number plate on the back of the car with Skids on the back.  Of course, this could still turn out to be a ruse, with the name being digitally removed in post-production.

Finally the Coronado CA city website posted some inforoamtion saying that some scenes were shot there today involving pyrotechnic.

 "The San Diego Film Commission and Naval Base Coronado are working with DreamWorks Productions for a day of filming on Naval Base Coronado. They will be filming an action sequence near the bunker at the south end of Naval Base Coronado approximately a mile north of the Imperial Beach city limits. The work will take place from 3 p.m. to 11 p.m. on Thursday, October 9 and will include gunfire and small explosive visual effects. It is planned that the gunfire and pyrotechnics will take place between 6 p.m. and 11 p.m. There will be production trucks and trailers, generators and lighting equipment used on site. The Film Commission, the Navy and the production company acknowledge that the filming may create a disruption and have indicated they will do their best to keep the disturbance to a minimum. The location manager Marc Meeks and San Diego Film Commission representative Kathy McCurdy will be onsite during the entire project."