The 28-year-old Canadian had run 65 laps, and there were 30mins left to go in the two-hour practice session – the last before Friday’s Carb Day practice – when the incident occurred.
Romain Grosjean’s Andretti Autosport-Honda was running relatively slowly down the front straight, close to the pit wall, allowing cars to pass on his outside as he attempted to get in the tow of a pack of cars.
