If they race on October 31st instead , the Champ Cars can still display at SEMA .
We could see the Champ Cars on display at the show as a lead - up to the race the following weekend .
If Champ Cars race on October 31st instead , the Champ Cars can still display at SEMA .
We could see the Champ Cars on display at the show as a lead - up to the race the following weekend .