Mario's twin, Aldo Andretti
https://www.indystar.com/story/sports/motor/2020/12/31/aldo-andretti-brother-mario-andretti-dies/4103441001/ https://en.wikipedia.org/wiki/Aldo_Andretti :( I met Aldo once, 54 years ago. Indy car race at Trenton, NJ, 1966. I was getting...