This came up at club last night and although it is wrong, the 'rules as written' mean it can be done, anyway let me explain.
My friend took a twenty man chaos space marine squad and bought a rhino for it even though they could not ride in it and then spent the rest of the game using it as mobile cover for the unit.
Now he cant see a problem with this as according to the army list it can be done but it just feels so wrong. What are peoples view on this?.
Well, the Chaos Space Marines have the chaos gods on their side, while the Space Marines have Games Workshop on their's.
So one has the most corrupt, twisted and souless entities in existance helping them while the other gets the chaos gods.