where the nearest COSTCO store is located, they are all over the state, OR GO ONLINE costco.com and buy before you arrive. This store has great buy's on everything. They have a good Garmin GPS, loaded with US and Europe maps, for 79.00. Prices have dropped down to these very low prices as of last Christmas. You must use hwy 1 from Monterrey, to San Luis Obispo, then 101 to LA, then the 5 freeway down the coast to San Diego. Enjoy I recommend SF & San Diego as the best towns in Ca. enjoy your trip. I was born in Ca. a long time ago, and love the state. You will too.