In the last trailer that got out on May 17th, when Spike and Sparkplug go about to buy Bumblebee you can see a strange object which follows them in front of the Porche car shop... here's a disturbing image of...

http://img128.imageshack.us/img128/9026/trailerei0.th.jpg

...a camera used to film the pan around the side of Sparkplug's car! First blooper in the movie found before it got on theatres!

You can see it from second 14 to 16 when they pass the man dressed in white