I'm worried about driving in Southern California - maybe for no good reason, I'm not sure. So, question #1 - how bad is is the traffic, if we try to avoid rush hour? Is it really hard to get around without getting lost, or do most rentals come with really good GPS's? Question #2 - it looks like we could take Amtrack from Anaheim to San Diego. But, is it really possible to visit the Zoo, Sea World and maybe La Jolla without a car? I haven't picked out a hotel for SD yet, if that makes a difference. I'm worrying way too much about this! Thanks - Pam