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. <br>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 ...<a class='more' href='https://www.motorsport.com/indycar/news/late-mechanical-issue-costs-marcus-armstrong-shot-at-first-indycar-win/10832268/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-ALL&utm_term=News&utm_content=www'>Keep reading</a>