Exactly Hasbeen
yeh they fasten down to the deck and easily open up just like the name suggest like a pram hood for a quick getaway.. and fold flat on the floor when not in use.
So you can the sunshine in on a good day,
we don't get quite that extreme of weather here, well not quite yet[:D]
But what i have always found in the past is with the covers that are laid over the car they either sweat or trap the moisture, and eventually with any wind damage the paintqwork weather these let the car breath naturally.
during the interim when i was pondering what new cover to get when the last one finally gave up the ghost. i agree with your comment and thought it would be better leaving it to the elements in the short term rather than placing a cover on it.
So it was either one of these perambulator systems as i was very impressed in how it had kept the next doors neighbour car in almost garage conditions. or extend my garage.
[8 whole cylinders worth of punch to ram the world through the windshield and out the rear view mirror. Car & Driver]
1981 Grinnall TR7 v8
1981 Black FHC
1979 & 1980 Black Premium FHC(laid to rest) Sorry
John