I did auto-x a couple times w/ the BMW-CCA, that was a while back now. Just haven't had time on the right weekends to squeeze one in between the $job, travel, HPDE weekends, and car maintenance stuff. Hopefully this next year I can do a few more. Frankly I enjoy the HPDE track stuff more than auto-x, but I would like to get back into hitting those. Good for working on traction skills, etc. Still, nothing beats hitting triple digits on long straights and then braking down into a tight hairpin and trying to get back out the other side without losing any more momentum than you have to