Things I have seen used or needed:
1. Brake fluid
2. Extra Alt
3. Beer
4. Tags, insurance, driver lic.
5. Credit Card so you can get a tow home if needed
6. Jacket - as sometimes it can be a little cool
7. two way FRS radios
8. Coolers with ice
9. extra cleaning stuff if your one who likes his car to look good
10. Camera
11. Video Camera
12. Alot of tall tales to tell at night while drinking!
13. and the biggest one - Learn how not to be around the dumb ass drivers
Maybe this year there will be some hotties that will be willing to take pictures with the cars.
Be careful everyone, have fun and get lots of pics. WIsh I had a freaking rotary that was running right now!!!!!!!!!!!!!!