Marcus Armstrong lost a near-certain victory at the XPEL Grand Prix at Road America after a late-race mechanical failure forced him to retire with just four laps remaining.
After starting third, the 25-year-old New Zealander out-lasted a complex blend of strategies courtesy of a chaotic 55-lap race that featured five cautions and constantly shook up the running order. He was out front for 14 laps, including the closing stages of the race where he held more than a 2.5s advantage over Arrow McLaren’s Christian Lundgaard with less than five laps remaining.
