It sure didn't take long for folks to jump to conclusions about the inspiration behind GM's new Hummer HX concept vehicle but -- surprise, surprise -- the company's now denying that any such influence exists. According to GM design director Carl Zipfel, the HX wasn't modeled on Halo's Warthog but on "modern-day ATVs" -- even though he freely admits that both he and several of the vehicle's designers play Halo. Of course, it's entirely possible that they're just saying that now that they've realized they'd already been outdone by Chrysler in the subconscious Halo-imitation department.[Via Digg