>>7330013>>7330016>>7330018from the looks of it, his transformation seems to be that his vehicle's top slides over his hood. You can see his signature cybertronian grill sticking out in some shots.
Judging from that, and how his legs have yellow on them, and this picture, it seems like his legs and arms join to make his fins, probably with fold out panels, while his torso is the middle section folded up (siege loves folding)
the lack of any wheels reinforces this.
