2018 Mercedes-AMG GT C Roadster: The New In-your-face Roadster from the Three-pointed Star Published on March 29, 2017 in First Drives by Gabriel Gélinas Photo: Mercedes-AMG 2018 Mercedes-AMG GT C Roadster - Sporting the Panamericana grille inspired by the 300SL Gullwing racecar that won the Carrera Panamericana race through Mexico in 1952.