Spleenrippa
The Spleenrippa is an Ork dedicated anti-tank vehicle. Its primarily armament is a large Battle Cannon, but it is also equipped with a variety of Shootas.
It is also contender on one of the most weirdest, goofiest and impractically designed vehicles of the Orks. Which is saying something due to it being forward mounted, meaning the entire vehicle must turn in order to take a shot and the fact that it has wheels which is probably really bad at compensating the immense recoil coming from the giant gun.
Nowadays it is being mothballed by Games Workshop and has been sitting inside its closet for over decades now.