Being a NASCAR fan, I would love to see the SST race or even have an expo race at Talladega or Daytona. More than enough room and using the banking could be interesting track layout. Of course Charlotte has always been known to bring interesting entertainment during the Cup race weekends.
Outside of NASCAR tracks, the Superdome in New Orleans would be cool or Cowboys Stadium in TX.
Be cool if the ran at Estadio Azteca Stadium in Mexico.