Teams planning to participate were: Andretti Autosport, Team Penske, KVSH, Schmidt Peterson, and Rahal Letterman Lanigan Racing. The rule of thumb for sessions such as this is you can't tell for certain who'll be there till it starts.
The ABC Supply 250 is scheduled for Aug. 17.
There will be a $5 charge for parking on the grounds, a spokesman for Andretti Sports Marketing said. Milwaukee Journal-Sentinel