I do not think anyone has ever done a bio-mechanical vehicle ... cyborg tank. Back in the 1970's - after the "Lensman" series of successful science fiction novels _ E Doc Smith wrote a couple of novels about a cyborg spaceship (brainship). Basically a body-form encased in nutrient tank capsule - connected to the ships computers/controls. Several writers since have used that notion/concept.
Say meld a human driver into a T94 (slight accident skin diving - piranha ate his lower half) ... from a commanding generals perspective - would be trustworthy ... because the human part of the cyborg tank cannot exactly 'run away'.
On leave - the cyborg T94 might spend its leisure blowing-up ponds that may host piranha (slight neurological trauma problem the army are trying to address).
Good luck in the competition.
Be well, be happy and keep safe (includes taking care when swimming),
Excellent - great inspiration (scarab) and brings relevance/proportion to wings/back armour.
Sword - very good - is consistent (matching) rest of character.