Haha good question! Some people would be good with the old fashion way of feeling it with their faces! However, for me, I want bragging rights. For instance, I was camping out of the buggy the night before last in the mountains. My thought to myself was, "It was cold as sh*t last night I wonder how cold it was?!" I have a temp gauge on my motorcycles and find it interesting as the weather hits extremes. WRT the engine temperature Id like a bit more data than the 4 bar, bar graph. My fall back is one of those 12v plugin gizmos like Rick has.
Happy new year to all.
Steve