Who you think is still hiding.? Or were there all killed on cybertron in the great war.? As the ark was only shown to escape the planet.? so why did prime say at the end of the movie. This is a message to any Surviving autobots hiding amongst the stars we are here we are waiting.? Knowing prob fact the ark was the only ship to escape the great war.? I doubt it was the only ship to escape but would prime know of other ships to flee the planet.?