I need some advice about the road to Vegas from Santa Monica. My sister and I are planning to leave sometime in the middle of the night to get to Vegas early in the morning- you see, we are taking a 3 week round trip cross country road trip, so we only have limited time in each place- only 1 day in Vegas, and we want to make the most of it. I am totally used to us leaving at like 3:00 AM from NJ when we do our drives to FL, and feel perfectly safe stopping at the rest stops along the way. However, I am not familiar with the drive on I-15 through the CA desert, and I've heard some areas are kind of sketchy. Can those of you who live there and are familiar with the drive please give me some advice about whether you think it is safe for us to drive in the dark, leaving around 3 or 4 AM to hit the road through this area? Are the rest stops safe or are the desolate in bad areas?