If you are in the LA area, this might be fun.

“I would like to invite everyone to the seventh annual Wrightwood Jeep and Willys Day event that will be held on Saturday, October 9, 2010 in the beautiful mountain town of Wrightwood, California from 9:00am to 4:00pm.
This event is completely FREE and a great time for all.

They close down the main street through town and from approximately 9am until 2pm all the Jeeps and Willys fill the street almost like a car show but more of a meet and greet. Then, at around 2pm everyone takes a parade style run somewhere in the local mountains, returning to town by around 4pm. (Exact destination of the run, not yet determined). Parking in the participation area is reserved for any Jeep or Willys vehicle. However, there is plenty of parking for others and all spectators are welcome!”