I advise you and Racer Magazine to read what Craig has posted on this subject - it seems that far from making racing enthusiasts out of non-fans, it is going to hugely embarrass open wheel fans and make people wonder why turbo engined "Indy Cars" sound like NASCARs and slide all over the track like ice racers. Montoya and Franchitti are not in this movie - just people dressed up like them - although I daresay Mikey will play himself and get star billing.
This is not going to be a good movie and will do nothing for Champ Cars or their pilots but make them a laughingstock among real racing people and bore the daylights out of the rest.