Australians have put High Limit International on a level higher than Australia's traditional sprint car meetings, the Australian Championship (Australians only - no Kiwis or Yanks allowed, which fans note dilutes the racing) and Grand Annual Classic (the latter is Australia Day in late January, a 60K AUD to win race that Speed Sport compares to golf and tennis "national opens" in Australia).
There is a giant void in motorsports since NASCAR is all but caput so maybe sprint cars are it. I love the series.