The 2018 Mercedes-AMG GT Roadster expands the German make’s range of 2-seat exotic sports cars. Among the styling cues that differentiate this model is a new grille, which recalls the iconic Panamericana 300 SL racing machines of the 1950s. The GT Roadster not only offers higher performance than those classics, but more luxury too, as Zach Vlasuk finds in this Video First Look.