Former Formula One and IndyCar champion Jacques Villeneuve has passed his Indianapolis 500 orientation course.

The Canadian is attempting a comeback at age 42, while Kurt Busch also passed his orientation as he aims to become only the fourth racer to complete the Indianapolis 500 and a 600-mile (966-kilometre) stock car event in Charlotte, North Carolina, on the same day.

The only starter who failed to complete the required demonstration of control at speeds up to more than 338km/h was US teen Sage Karam, who was foiled by mechanical issues.

He can resume the process on Sunday when the famed 2.5-mile (4km) Indianapolis Motor Speedway oval reopens for practice ahead of the May 17-18 qualifying for the May 25 race.

Busch, coming off a crash in a stock care race the day before, completed 180 laps and reached the top speed of the session at 357.7km/h He also practised pit stops.

Only John Andretti, Robby Gordon and Tony Stewart have raced in the same double he’s attempting.