Based on the "Scorpion tank (UNSC) Variant" model by Shadow_hawk on Sketchfab.
Uses a fairly large amount of wheels (12!) - was likely not necessary but that's what I ended up with. If it's an issue you might have some positive results removing 4 wheels - the middle one in each 'track'.
The 4 attached track assemblies are also physics bearings, so be wary of that.
Q/E to rotate the turret
C/Space to move the turret up & down
Left click to fire the main cannon
Right click to fire smol pews