There is definitely some grip to be had on the concrete in Lincoln as witnessed by this photo I took this week at the Pro Solo
A ton more photos here:
http://gotcone.com/pgallery/2009_aut...ro_solo___lap/
I didn't drive as I'd never been to a Pro before and kinda just wanted to see what it was all about. It looked like a blast, if you've never been to one if you get a chance you should definitely check it out. It is way different from any other autocross you will ever see...