I use a 5hp shop vac in the blower mode. A California Water Blade and a large Microfiber cloth to get the left over drops.
With the Mr. Clean washing system, your ride will self-dry with no spots. I use RainX no-spot carwash soap and softwater to achieve the same thing.
Some people use an electric blower (215mph and up) to dry their rides so they don't have to touch them at all.
2004 E60 530is, Delivered 12/12/03, TiSilver/LGrey, PP, SP,PS, PDC, ACC, FRS, Step, Xenons, clear bra, body colored rear inserts. (Retired, 1983 henna red 320is)
2004 Corvette Z06 Commemorative Edition