And now, Monster Trucks:

I always wondered why they are not more widely used, especially by the military. I mean, they are in the end very good off-roaders, and not too slow either.
Take the Hummer (or HMMWV more accurately). They are big, heavy, gas guzzling, but in the end, they can just about climb an obstacle about 0.5m vertical and as they understand, they are a bit of a favorite to blow up with IEDs.
In that one, an IED would blow up a wheel alright but the rest of it would be much further from it. Also note the detail that a lot of these have the engine "under" the car than in front of it, so that would act as further armor. Sure they are a bit of a bigger target, but most modern weapons that can hit this, can hit a Hummer as well, and shipping would be a biatch. But body and wheels could probably be shipped seperately. Plus there is the coolness factor, of driving around armored monster trucks with guns.
An other idea of Senator Tech, my weapons company, when I get around in making it.