well I did my wife's SUV this weekend as well. Washed and put 1 layer on yesterday lunchtime (over a few layers of Jeffs Prime & AJT put on a month ago...) and left it.
This morning there was a heavy dew on it so I towelled it carefully (it hadnt been driven since yesterdays layer but was outside) and left it to totally dry a little longer, then put another layer on.
No problems and the finish was lovely. Temp was about 40 degrees at the time.
