Mclaren 650s Spider Roof

It weighs 40 kg 88 lb more than the coupe but it offers nearly identical performance.
Mclaren 650s spider roof. Mclaren 650s spider with roof closed first announced in february 2014 the 650s spider is a convertible version of the 650s. The spider has the same structural stiffness as the coupé primarily because the carbon monocell chassis was designed without a roof. Even more remarkable our obsessive engineers ensured that the spider s drag increase is minimal at only 3 with the roof down.
Source : pinterest.com