There is some information available on the Iowa Speedway
website about the HRPT.
GM Performance Division will have a 2010 Indy Pace Car Camaro, 2010 Camaro Dusk, and 2010 Camaro Synergy along with other vehicles.
Car designer Chip Foose is also going to be at the Magnaflow display.
If you like to look at cars and browse aftermarket displays you should head out. You can join the cars at Newton for $25 or go as a spectator for FREE.
I am hoping to go check it out, but not sure if that is going to work for me yet.