Have a windbreak for my old BMW Cabriolet and it is excellent. Many years ago drove it through the mountains in Japan hood down in -10C on a bright clear day and it was superb - despite strange looks from Japanese drivers who no doubt thought I was mad. But its role is in part to cover the well created by the rear seats into which the wind whips at any speed when the hood is down. In the 4/4 find the abscence of rear seats and the low seating position seems to prevent this from happening in any major way compared to a 4 seater.
Do you prefer driving hood down on sunny cold days or sunny hot ones? I have to confess a preference for the former.
