"HPDE" better be defined by everyone as "High Performance Driver's EDUCATION." That is the only chance you have of getting your insurance to cover you on the track if you have an "incident." Many policies now exclude any type of track time but those without that specific exclusion would still need to provide coverage as long as it is considered "Education." There is a huge distinction legally based upon the contractual language and endorsements in your policy so we should all be consistent, at least with NSXPO, with the "E" part of "HPDE."
Bob
Bob