Homer2

if you have used the car wash soap/water mixture as the lubricant (e.g. zaino) - then washing is best , actually its required to get the dried water/soap off the car. a quick wetting with a hose, and a soft wash mitt or towel (whatever you wash with) will lather it uo and rinse it off . the whole process takes 5 minutes to lather and wioe and rinse - then drying is done.

if you use a detail spray as lube - then the need to wash again is mitigated . ..