they heat up much quicker in the winter than the air inside the car....so it definitely prevents me from reaching severe levels of rapid, mandibular, vibrations...caused by my body'* natural inclination to respond to an exigency and ensure complete survival.
you know...i think this is a losing battle....kinda like trying to stop a bunch of leaks in the hull of a boat...one springs...you go to plug it, then another springgs up somewhere else on the boat, then another and another. i give up! let me sink and die! bill, you'll miss me!