I am just starting to research a 21 day road trip to California for August 2012. Initial thoughts are San Fran to LA with stops along the way. Disney is a must for the kids as well as Yosemite. Any ideas / suggestions would be greatly appreciated to help make this a trip of a lifetime. We also want to include some relaxation time by the beach as well as shopping. I look forward to reading your suggestions or pin pointing any articles / books I should read to help me plan the trip.