Heard this on NASCAR2Day and during the race a few times – That #2-Rusty Wallace and #12-Jeremy Mayfield are using different chassis and are unable to share data when they test. I am getting a lot of email wondering what this means and maybe the team will switch to Chrysler/Dodge. Not sure what it means and am not looking to speculate on it. Penske is known to experiment with his teams(in CART etc) and to try new things
