I'm not sure if your asking for this year specifically but in general, it has been done.
What you are referring to is called Ackermann steering. Team 34 did it extremely well in 2008, Ill find a pic...
http://www.chiefdelphi.com/forums/sh...ad.php?t=65044
So yeah, its been done

I'm sure people will post more, 34 just stuck out in my mind.