Like superheroes, supercars don’t have a typical life cycle. The Audi R8 may be showing just a hint of gray around the edges—but it’s still a looker. Launched initially with a 4.2-liter V-8, a V-10 was added, then a Spyder, and finally the lightweight, limited-production, and loud R8 GT. Audi also has toyed with the [...]
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