My sister, brother, and i are planning on a road trip....we're hoping to drive to san diego, california and stop in some places in between, and then drive to las vegas, NV, and come home, stopping at some places in between...hoping for some recommendations on some neat towns, museums, whatever!! We're hopin to leave the first week of august, and will be on the road for a week. I'm 20, sisters is 17, brother is 15...so something that would include all of us would be appreciated. Thanks!!