I dont know that the VX could really look so military issue. The body lines are just too rounded, as where much o f the military issue vehicles are boxy and bulky. I would lean more to the space look, or perhaps even Gundam/Transformers look. Careful though, too much "add-on" fluff starts to make it look like your car is an advertisement for Pep Boys teenage rides section.

I always look at my fuel latch and think "man, what if there were more of that look on the VX". Perhaps maybe more aluminum/gunmetal sheeting with those allen wrench/rivet looks? Like the fasteners where the cladding attaches. It gives it that bolted on armor look.

Better yet, mount a TOW missile launcher on the roof and call it a day, hahaha.