good ol space choo has been notoriously inconsistent in both comics and cartoon. while in UKs space pirates he was modestly shown carrying a small decepticon unit, TFTM had his innards big enough to house devy in combined mode. that said, in a sci fi universe that employs subspace tech/theories, it borderline plausible. most recently marvel's nextwave features the protagonists' ship which appears smaller from the outside but roomy on the inside. ...a scene with 30 decepts getting into 'stro on fast forward with clown music playing would be hella funny tho.