We arrived in Newport Beach CA today, it took us 7 days to drive cross country. Approximately 3100 mi in all.
At the end of the day yesterday we crossed into CA, drove from the high desert of New Mexico, into Flagstaff AZ, then south to Phoenix, and west on I-10 to CA. Spent the night in Blythe, CA which is on the Colorado river. It is interesting to drive through the Arizona desert, and see so much green, it looked like the Nile river after the desert. This morning it was 83F at 7:30am... it was 105F yesterday. The locals told us it was cool... they were expecting 120F temps later this week.
It was a great experience... if you ever get the opportunity and don't mind driving, I highly recommend a cross country trip.