So, we know Cade is repairing and hiding some robots at the junkyard in Arizona right? what if some of those robots he's hiding/repairing (besides the main team), could be past autobots that haven't been confirmed dead like Sideswipe, Dino, Roadbuster, Topspin, and Jolt. That's why we see wheelies alt mode on set, and maybe the junk bot (wreck-gar possibly?) could alsop be collecting parts for Cade while doing so TRF gets an energon signal find the junk bot kill it and go to the junkyard and, that's how i see this happening. Let me know your guys thoughts .