A few seconds is plenty of time when it's being rudely wasted and I'm freezing my ass off. I agree, it's important to wash the undercarriage when there's salt

A few seconds is plenty of time when it's being rudely wasted and I'm freezing my ass off. I agree, it's important to wash the undercarriage when there's salt on the road. However, I would never get a car wash at any old gas station, the risk of swirling or scratching my paint is too high. On top of that, who knows if these bottom-barrel gas station washes even clean the undercarriage effectively, or even at all. Oh and of course there's the risk of accidentally pressing the wrong button, being charged for the car wash, and having to waste more time getting refunded.