The manufacturer for the current two cars is the same, right? They seem like a kinda bulky, heavyweight company for the most part. Gives it a kind of space-American feel. Maybe something like "Rytek Heavy Industries" for the brand?
As for the cars, the current one could be something like "Patriot" or, like Queadah said, "Enforcer."
As for the tank, something like "Behemoth" or "Leviathan," something reminiscent of an ancient beast.
It'd be cool if we could get a company that used medieval/fantasy-themed names so we could have stuff like "Archer," "Paladin," "Knight," or "Rogue" all under one manufacturer.
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