View videos of the vodnik being used to reach hard spots:
Video 1
Video 2

How to: Vodnik

This is just a simple guide on how to use the vodnik to reach some out of the way places. As it shows below you can using sprint jump up from the front of the vod to gain access to the top. You can also jump on top by using the side of the vod.

Easy enough right? Now you can reach overhangs and signs which will allow you to jump to the tops of some until now inaccessible roof tops.
While working on Shaqri spots though I had one particular balcony I wanted to reach. I sat and thought then realized I missed a part of the vod I hadn't utilized yet. The machine gun.

I turned the gun sideways, put the vod on even ground and attempted it, second time got it. although its not easy! After that it was hit and miss but it is usable.

Now this was a surprise to me, you can drive the thing and it has a pretty darn good gun to. Who would have thought?