Salt Trucks in the Winter....

Ok, so this is quite random (as Pete Fehr would say lol). In my new job, I get to watch the traffic drive by all the time on the highway, especially at nights when I have nothing better to do. The past 2 nights I've noticed the Salt/Sand trucks going out quite regularly in the middle of the night, when the highways are clear. They're out on the highways for no use! Maybe its just me but I think its pointless. I don't know about anybody else, but I've had enough of winter! Time to warm up. My skin can't take it anymore. Psoriasis doesn't like cold dry weather!