I am driving as I did the last time Nat's were in Phoenix. Flying actually takes longer. By the time I factor in the time to get to the airport, check in, go through TSA, wait to board, fly, disembark, wait for luggage, go to the the auto rental counter or wait for the shuttle and drive to the airport, it takes close to 6 hours. Not to mention the $700 for rental car and airline ticket. I can drive from San Diego in about five and a half hours for the cost of one tank of gas and I don't have the cost of a rental car or wait for a cranky shuttle driver. Yup, I'll drive.