The 240D's are great cars for just this, I did the same thing but from California to Parker, AZ and it was a blast it ran like a top and gave me great mpg, boy I sure do miss my 240D.
Those are great pictures and beautiful car! That's Arizona?
I've only been to Phoenix/Mesa and just see the usual flat, sandy place. I want to go there! lol Glad you had a great trip!