Select any course except D and win all the races (you must win them to get a gold medal-finishing in the top 3 is -not- good enough!). Collect all the gold medals and you enter a bonus round on a secret course with you in control of the F-14 Tomcat from Afterburner! with no collision detection. Do the same thing on course D and collect all the gold medals and this time you will be in control of the Super Hang-On bike!