Convertible variations of popular coupes and sedans are often an afterthought in the model line, but Infiniti decided to take a different approach with the G37, redesigning it from the ground up. Everything on the G37 hardtop convertible from the A-pillar rearward is new, and the clamshell-shaped folding roof tucks into the trunk in less than 25 seconds. The car looks great with the top down, and the cabin actually boasts a little more room than the coupe’s. Although the convertible’s 3.7-liter V-6 suffers a 5-hp drop compared to the coupe, it is blessed with Infiniti’s all-new 7-speed automatic transmission and still reaches 60 mph in less than 6 seconds. Fans of Infiniti’s G Series who also enjoy a little fun in the sun should consider the G37 convertible as a formidable alternative to BMW’s 3 Series. Pros: Looks great with the top up or down. Cons: It is noticeably heavier than the G37 coupe.