Stu Hayner Infineon Pre Race Report

FOR IMMEDIATE RELEASE

Contact:     John Thawley
                    248.227.0110
                    johnt@c2group.com


Stu Hayner Infineon Raceway Pre Race Report
#5 GMAC / Trenton Forging GTO On A Roll Into Round Seven

Detroit – July 13, 2005  With his fourth place finish at Lime Rock  
Park and a development program that is starting to hit its stride,  
Stu Hayner wants to keep moving the GMAC Commercial Finance / Trenton  
Forging #5 GTO heading in the right direction for Round Seven of the  
SCCA Pro SPEED World Challenge GT race at Infineon Raceway in Sonoma,  
California, July 15-17. The race is in conjunction with the American  
Le Mans Series and part of the Infineon Grand Prix of Sonoma  
Presented by Ravenswood.

“This west coast swing will be a real test for our guys and this  
program,” said Hayner. “Now is the time to step it up. We’ve made  
great progress in the last four races, but they’re already history.  
Our guys know that the next steps in our progress are really tough.  
You can shave 1/10s of your time with a change here and a change  
there. But now we need to find those 1/100ths… we need to find that  
extra speed at the long end of the straights.”

“We’ve done a great job zoning in on the car’s handling,” Hayner  
continued. “That was such massive problem with last year’s car that  
it became our primary focus with our 2005 cars. Horsepower has been  
somewhat secondary. We knew we had to focus on getting the car in and  
off the corners…. we’ve done that. I can really feel the car now… and  
I can put it where I need to be whether I’m in traffic or in the  
corners. Now we need top end speed… I can manage the rest.”

Hayner and his Autosport Development team will have their opportunity  
to finally put the #5 GTO on the podium this Saturday at The Infineon  
Grand Prix of Sonoma Presented by Ravenswood. The weekend schedule  
calls for the SPEED GT race to run Saturday at 1:05pm and the Touring  
Car race to run on Sunday at 2:50pm. Both races will air Sunday, July  
17th on SPEED with the GT race at 1:30pm the Touring Car race at 6pm.  
All times are EST.

Autosport Development competes as part of the SPEED World Challenge  
GT Series. All events are nationally televised on SPEED channel  
(formerly Speedvision). In 2005 the SPEED World Challenge Series  
schedule will include street races and temporary circuits in  
Cleveland, Denver and St. Petersburg, and make the traditional stops  
around the country at great tracks like Sebring, Road Atlanta, Lime  
Rock Park, Infineon, Mosport, Portland, Mid-Ohio and Laguna Seca.

For more information about GMAC Commercial Finance, visit www.gmaccf.com

For more information about Trenton Forging, visit www.trentonforging.com

For more information about Autosport Development visit  
www.GoAutosport.com

For more information about SCCA SPEED World Challenge, visit  
www.world-challenge.com