Has anyone heard of the Killdozer? A few years ago in the US there was this guy who went nuts. He spent a year armor plating a bulldozer in his barn. by the end the whole thing was covered in two layers of half inch steel with a foot of concrete in between. The guy went on a rampage through his town a nd destroyed a bunch of buildings. He had assualt rifles in the thing too. in the end the engine gave out and before the cops could cut it open he killed himself.
I just recreated the Killdozer for my army and will try and post pics soon. It just seemed like the most Brikwarsy vehicle there could be.
Here's a picture of the real thing.