It is also contender for one of the most weirdest, goofiest and impractically designed vehicles of the Orks. Which is saying something since it has wheels, which is probably really bad at compensating for the immense recoil coming from the giant gun.
Nowadays it has been mothballed by Games Workshop and the concept been sitting inside GW's closet for decades now.
If you want to translate this vehicle onto the modern WH40K tabletop than it is best to find a Trukk, rip out the main chassis, and replace it with a giant pipe/cannon that dominates the entire vehicle. Congratulations, you have a working Spleenrippa.