I havent waxed my car since the summer, as its just too cold here as well. As for touchless car washes, I dislike, I prefer the wand washes, not only is it cheaper, you have control over the cleaning. I usually bring one of those sheep mitts with me and use the foam brush for soap. The only time that brush touches my car is when I scrub the bottom of my side skirt...its NASTY under there! Basically it will only last so long, but be thorough with your wash, spend maybe 4-6 bucks. BTW unless you are willing to shell out the cash, Id wait until spring rolls around for some professional detailing.