I got an e-mail from the Roof reseller and he told me the helmet is not for road use and it's not DOT or Snell approved, but it meets EU standards ??, basically you get one just to look cool. The price is $450.
These helmets won't save the pilot when his plane crashes, neither an Arai top-of-the-line will if you are run over or crash at high rate of speed.
I still remember my MSF instructor telling us "Please wear a helmet, cheap or expensive, no matter, have something around your head that at least will hold your brain in one place... the worst thing is wear nothing and pick up the pieces"