"Any chance you get to beat Roger Penske, you take it," Andretti was quoted as saying by Australian Associated Press. "He's the benchmark in the sport."
"We're really happy to welcome Stefan back to Andretti Autosport and proud to see him running the No. 25," said Michael Andretti. "While not on track, Stefan was a big part of our Indy 500 effort in 2017, and we're looking forward to getting him back behind the wheel at the Indianapolis Motor Speedway."