From Kirk Duncan:

Race the U-6 Oh Boy! Oberto hydroplane on-line with this "hidden" game at the Oberto website. Go to: http://www.oberto.com/our_brands/

You do have to sign up at the website, but after you do that, click on the "Beef Jerky" logo (like the one at the right) .Then click on the Oh Boy! Oberto to enter the game and sign up.