Scott McLaughlin is leaving Australia’s Supercars Championship ranks to race fulltime in IndyCar for Team Penske in 2021, the team announced Friday. Penske is ending its six-year run in Supercars competition.Scott McLaughlin is leaving Australia’s Supercars Championship ranks to race fulltime in IndyCar for Team Penske in 2021, the team announced Friday. Penske is ending its six-year run in Supercars competition.