This is an enhanced version of Prime's trailer with inspiration coming from
Powermaster version of the toy.  The trailer transform into a base with
ramps to hold fellow autobots. It also turns into a body to merge with the cab
to become super prime.



Some achievements:

• not a single part need to be separated during
  transformation between modes (except the cab obviously). Even the guns on the
  side of trailer stays there till it becomes the shoulder cannons.


• Making the back half the trailer to do what a
  trailer does, that is as a compartment to store cars, energon cubes, whatever.


• Making him articulated

Some gripes:

• never able to design a more secure wings/flap.
  


• the way his head is tucked/mounted are pretty
  weird, like a zombie head sticking to a pole.


• never able to make the trailer backdoor to flip n
  touch the ground to become ramp for cars to drive in.


• last minute design of the component tat connect the
  cab to trailer. this component end up sticking out of super primes butt.


• Articulation is no use when the joints can't take
  the weight. argh!