Well, someone has to be different....I don't wash my car at all. :surprised It's not a daily driver, and typically sees about 1,500 miles per year. The car is very clean (I like to show it), but I just choose to keep it that way using a different method, that's all.
A quality, carnauba-based quick detail spray combined with quality microfiber towels is how I choose to maintain the finish between polishing/waxing. I have always found hand washing to be more time consuming than the use of a QD spray, not to mention chasing the elusive water drips after a wash - no thanks.
There are several other Corvette owners that I know that implement the same system, although I would not recommend it for a daily driver.