Overall

Vision Vision

Originality Originality

Technique Technique

Impact Impact

I'll divide this into two, one for the image, one for the written details:The picture:It's cool, detailed and sticks to a style of art. It is a little hard to imagine how it would be shooting the projectiles and so forth, but is convincing enough that you would be fine seeing something like this in a movie or in a game.The details:Considering the weight of the projectile against the dimensions of the tank, I would say that the tank will probably be wrangled pretty badly after the first shot due to newtons third law. I think you are too concerned about the amount of total energy of the shot rather than how damaging it would be and it results in something that would not work at all. Kinetic weapons in general are not weapons of mass destruction, but of precision (damage is caused due to high pressure when a small projectile traveling fast hits a target - compare a kick to a bullet from a pistol, the latter has less kinetic energy, but is more dangerous by far because that energy is being directed in a very small area which causes a huge amount of pressure which makes it go through alot of things and cause damage). If you want mass destruction, you would shoot a projectile fitted with a nuke instead and in that case the kinetic energy of the projectile must not be too high (or the nuke will be blown to small pieces due to the impact before it can explode).A kinetic rail gun tank is not a tank of mass destruction through kinetic energy blast, it is a sniper tank of great precision, range and speed.