Formula E rule makers have taken a harder stance on mid-season driver changes for the second year of the all-electric championship, with only two changes per car, per season allowed.
Ed Carpenter won the race as Ryan Hunter-Reay survived a thrilling end to the 2012 IZOD IndyCar Series season to take the championship by a narrow margin over Will Power.
Marco Andretti blitzed the field on Fast Friday, hitting 227.540mph on with the assistance of the additional turboboost that all the drivers got to use for the first time.