Who said it was the american crusader?(never heard of it myself)
In the second world war the british had a tank called the crusader (http://en.wikipedia.org/wiki/Crusader_tank) and that was already out of date when first produced.Ps: my first post on mocpages!
Very nice, but I have three problems. The red plate. Also, there is already a Crusader tank in service with the United STates. And finally, a 30mm cannon wouldnt be able to stop a humvee. My suggestion, make the gun bigger to seem like a real tank, and then just tweak it a bit, and youll have a very nice light ank there.