I was in my first autoX this past weekend actually. I had planned to make a post once the overall results get posted as they haven't been yet.
For me, it was a complete blast. For one thing, I was the only MP3 there so I got a LOT of attention...would have got even more but one guy had a WRX and at least here they are quite rare still.
We had around 40 competitors and altho we got started late from start to finish it lasted around 6 hours total including signups, technical inspections, course walkthroughs and the actual racing.
As this was my first time ever doing autoX and really ever "racing" my car in this sorta way, I didn't do the best...definitely not as good as dolphin and cjstringer have done, but I can say this....I posted an overall time better than the Subaru WRX, a Nissan Sentra SE-R Spec V and a Porsche Boxster and they were all people who'd done autoX before, so I was pretty proud of my baby.
I'll post a more indepth story once I get the results from the perspective of someone who has never done it before.