Soooo... do people think it is really Optimus driving across the Golden Gate bridge at the end, or am I the only thinking it was just a visual easter egg for the fans... as Bumblebee just drove past him, and Optimus didn't appear to be on Earth until after that scene.

Actually... I think it would have been better to see the VW Bumblebee driving past that sort of truck just before he changed to a Camaro, to really be a really nice nod to Gen1.