I'm just going to use this as an example:
The kamikaze pwny does 2d10 explosive damage, meaning that the things in the first 2-inch radius get the full 2d10 damage, while the ones up to 4 inches away only get 1d10. How does that work on a vehicle like this? It falls within both 2 and 4 inch radii- does this mean I apply damage to the vehicle twice? Or if I only do it once, how do I decide when to apply it and how?