I should also have mentioned that when it reaches 30°C plus in the shade and you have several hours driving to do under a broiling sun not only do the side screens go on but the hood goes up and the aircon gets turned on.
I know this situation doesn't occur in the UK ...
Well not often I'll agree but it's not unknown. 30° here yesterday and forecast again today for S.E. England. I shall shortly be blatting over the South Downs to Goodwood with my Morgan cap for sun protection.
~iw