In my 1979 BMW, there was a dial for the fan speed, a dial for the temperature, and a slider to control how much outside air came in. It was the best climate c

In my 1979 BMW, there was a dial for the fan speed, a dial for the temperature, and a slider to control how much outside air came in. It was the best climate control ever. In the snow I could blast the heat at full fan speed with max temp at my feet while allowing the icy air from outside to blow at my face at the same time to keep me awake.