Cadillac introduces a spectacular four-door convertible and four-seater (with opening fold), called Ciel Concept and vaguely inspired by the Eldorado of the '70s. The Ciel uses a 3.6 V6 engine with dual turbocharging system, which delivers a maximum of 430 hp and is supported by a hybrid module with a lithium-ion batteries, included no means to improve the average distance but rather to increase the driving surplace .