My neighbors think I'm nuts because I frequently wash both my Crossfire & my Grand Cherokee late at night. Sometimes at 1:00 am. I don't have a lot of choice in this because my driveway gets full to mostly full sun from morning until around 7:00 pm. In addition to working all the different shifts at work, sometimes for 12 to 16 hours. So I just wait until late evening 90% of the time.