Jack heuer designed the carrera in 1964 as a tribute to the gruelling carrera panamericana mexico road race he said he wanted to encapsulate the bold spirit of the races gentlemen drivers the carrera calibre 5 automatic is directly inspired by this original design with the retro case shape and uncluttered dial being reminiscent of 1960s understatement fastened with a lightweight alligator style brown leather strap the slightly larger 39 mm case is complemented by a slender polished steel b