Android2137 said:
When the entire civilization is robots, it brings up interesting questions. How did these robots come to be? Were there biological life forms that built them? And were they all killed off in the resulting wars? And the entire planet mechanized? If the highways can build itself, then does that mean that the entire planet is a transformer or just the roads? Also, if you're flying in a spaceship to a space station, is that spaceship a transformer? Is there any non-sentient robot on that planet? Am I making things overcomplicated?
Robot bodies were created by Cybertron, and given personalities by a mega-computer called Vector Sigma that resides deep within Cybertron.
Cybertron itself is a slumbering Transformer called Primus, who is perceived as the God of Light (with on the opposite side, Unicron, a huge ass robot that also transforms into a planet). Primus and Unicron battled it out for eons, until they were both exhausted and forced into a stasis-lock. To defend itself against threats, Primus created the Transformers to maintain and defend his slumbering planet form. This was before there were Autobots or Decepticon factions.
As I mentioned earlier, the Transformers were given personalities (or sparks) by Vector Sigma, an ancient version of the Matrix (that each Prime carries in his chest). In time the Transformers evolved on their own and gained alternate forms. There are non-sentient robots, they are referred to as Drones who are basically like the robots we use to build cars. Simple maintenance duty.
As far as spacecrafts and shuttles, not all Transformers can fly (the Autobots cannot fly in robot form, only the Decepticons can) and more importantly, spaceshuttles get you to places faster and allows you to bring items with you.
So yes, the entire planet is a Transformer, in fact, it can also function as a planet-sized ship but that's not possible at the moment, because it requires too much Energon (their fuel).
Sorry for this nerdy explanation.