We are planning a trip to San Diego at the start of next year. After a week or so in San Diego we want to then hire a car and drive to Las Vegas for a couple of days before going back home to Britain. I understand that it is the I15 road we will be travelling along. Do any of you know of any exciting things to do that are along this highway. For example I have heard of the Worlds Largest Thermometer in Baker, its stuff like this I am interested in.I look forward to hearing your suggestions!