He was placed on indefinite suspension from his role with IndyCar .
Charges stemmed from an incident where Unser reportedly drag raced his Chevrolet Suburban SUV at speeds of over 100 mph .
Unser was placed on indefinite suspension from Unser 's role with IndyCar .
Charges stemmed from an incident where Unser reportedly drag raced his Chevrolet Suburban SUV at speeds of over 100 mph .