Quote:
Originally Posted by GregW / Oregon
To be serious for a second--there are a few open top cars that do not suffer a huge weight or stiffness penalty compared to their closed top versions, but they are few and generally quite expensive or dedicated track type cars.
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True, but none of them are 4-seaters. And the only reason they don't suffer in weight is that they are built on platforms designed to be convertibles to begin with. Technically speaking, most of the coupes that are based on these platforms could likely be made lighter with changes to the design of unibody, since the added rigidity provided by the roof could allow less material in other places.