May seem a bit over the top but there is a market and companies are filling the niche, mining out value and making money. They do need to refine the exterior design though, but then again if you're worried about getting assasinated the visual may be your last concern. But not for long.
The Combat T-98 is the fastest armoured 4WD in the world, and was built from the ground up to be the most capable non-military armoured luxury vehicle in the world. The 8.1 litre 340 bhp Vortec V8 can push the T-98 along at over 180 km/h, and in addition to sumptuous leather and woodgrain fittings, you can order almost any level of active safety feature, from gun ports to a full roof ring to carry a machine gun... (read more)
... Combat Armoring Group official site.(Yeah, it looks like a tank.)