I agree with you. I spent a lot of time trying to run some down. Bottom line is that it's only available in 55 gallon drums (PZL Part No. 5063827) in the U.S. Quaker State European Formula Ultra 5W-30 is available in gallon jugs (QS Part No. 5059344).
My VW user's manual states that the best quality oil for my car meets the VW spec 503.01, so I don't think this oil would be as good as GC or Mobil 0w-40 which does meet it.
specs look pretty nice, would be cool to have a VOA on it to compare to gc. curious if the penz has the detergency similar to gc (nearly on par with a HDEO).