When i was in college, we used to run TSD rallies in mid-winter in the Upper Peninsula of Michigan, a couple of which were in sub zero weather. We ran a Meyers Manx copy dune buggy bodied VW with no top, sides, or doors. It was fitted with a Halda SpeedPilot but no heater (wouldn't have been of any use.) When we burned up the original 40 HP motor, we replaced it with a '63 Corvair Spyder turbo motor with a Crane Cam. We wore helmets to keep our heads warm and snomobile suits. Wish I could find a picture of it. Nowadays, I don't take the top off the Elise unless it's over 60...DAVe