What's the magic about 18 x18????
I was not referring to my own vehicle as much as others' I have recently worked on. I Dawn/Zano'd my sis-in-law's Camry, but without clay, since she was letting us spend Labor Day at her house, and I was mid-process on the 3 and needed to displace her car to work in the garage. Hey, points with the family is points with the family.
Even one that needed a LOT of time with the clay to remove overspray or paint transfer (neice couldn't exactly explain all the black paint on the front 1/4 panel of her silver car) when I applied some protection after sitting there for at least 45 minutes with clay, just on that 1/4 panel, I still came away with a dirty applicator.