I agree with jay and wolfy if your going to just rinse i wouldnt go near it with a drying towel for the reasons they have stated. I just simply
Snow foam
Rinse
Give it a quick spray with megs last touch (or any drying aid) Demon shine is meant to be good and cheap
then rinse over with a open ended hose this lets the water sheet off much better than with a PW.
Car is usually dry as a bone after the above.
P.S if you want a car to test out your new foam lance on ill drop mine around
Aint been cleaned since you seen it last