I mean, it looks cool. The whole "Ballistic Missiles on a Treadmill" thing is... yeah... it's cool.
But it is not practical at all. Not only it is static, but you have all these "launch bunkers" sitting next to each other, with two tubes per bunkers.
Better not have anything jamming the doors I guess. Or nothing managing to break through that pile of concrete, otherwise you would end up with a fiery chain-reaction.
And considering a scud depot going up looks like this:
I hope they thought through the whole back-blast stuff.