I see the point, and I don't have the trukk profile here. But wouldn't the Trukk need the speciel rule "Assault Vehicle" to move, disembark and then assault.However, with a well placed Waaaaghhhhh, you can move 13 with Red Paint Job, disembark 2, run 1d6, and then assault 6. This gives you an effective range of 22 to 27 inches.
Ork truk is an open topped, fast vehicle. Flat out is 18, but cruising is 12 inches, for a fast vehicle. So an ork truk boy unit can (with red paint) assault with a warrgghhhhh. 13 + 2 + d6 + 6 = 22 to 27 inches.I thought only fast vehicles could flat out. My apologies if trukks are fast vehicles.
I always thought as well that in a similar vein to turbo-boosting bikes that if a vehicle moves flat out it may do nothing else that turn. Surely disembarking troops counts as doing something?