I wonder how bumblebee upgraded himself, in TF3 his altmode is much more modified camaro than in the first and secound movie. I doubt he scanned a new camaro, si also dont think that bumblebee was tuned with earth stuff, maybe bumblebee decided to add some cool features and created the spoiler, new hood etc. by himself, that would mean that movieverse transformers can tune itself ?? What do you guys think.