I enjoyed your article about getting lost in Orange County. I particularly liked the bit about the Thomas guide executive being "hoist by his own petard," since I use the guide myself all the time.
You did miss a few real winners:
1. Try getting off the Santa Ana Freeway at Myford Road, and finding that there is no Myford Road, since it has been renamed Jamboree.
2. How about driving from Santa Ana to Irvine on Main Street and passing MacArthur (the same MacArthur) twice.
3. Or follow Barranca from Irvine to Huntington Beach (it's Dyer Road in Santa Ana and then, for no apparent reason, it becomes Slater or Talbert or something).
4. Then there's Palm Avenue in College Park, Irvine (on one side of the street). On the other side of the street the sign reads "Palma."