Your pics bring back a very vivid memory from August. I took my grandson over to see those Generators. It was 122F and to make matters worse, it was humid! Who says the desert doesn't get humid? It was positively, unrelentingly super oppresively hot.
Nice choice, try that road that links to San Diego from Palm Springs to the south. It winds through the mountains and it is just awesome. I did it in a pokey Mustang 'vert, it's gotta be a thrill a minute in a 3'er.