I routinely drive in the cold. I jump at every opportunity to drive the cobra. Gloves, gator neck wrap, insulated coveralls and clear safety glasses get it done for me.
The coldest I have driven is 33 degrees (F). I leave for work around 5:30 am (40 mile drive one way) and it is always dark and I don't get the benefit of any solar heat
I didn't remeber installing a heater in the cobra when I built it, but apparently there is one connected to the throttle!
Kinton