Generation X question:
So
Transformers are these robots, originating on a distant planet long ago, which are able to fold themselves into a perfect replica of semitrailer trucks, fire trucks, and (if memory serves) a yellow Volkswagen Beetle. I believe the latter was recast as a Chevy Camaro for the live-action film.
Do the Transformers have an arbitrary ability to change their forms? If they found themselves on, say, Mars, could they disguise themselves as Martian trucks? Or were they designed originally to fold up into a Volkswagen Beetle (etc.), and nothing else?