Motor Trend: 2010 SUBARU Impreza WRX STI Carbon Concept2010 SUBARU Impreza WRX STI Carbon Concept2010 SUBARU Impreza WRX STI Carbon ConceptBased on the Subaru Impreza WRX STI A-Line model with 5 speed automatic transmission that offers distinctive driving performance to a wider range of customers, the Subaru Impreza WRX Carbon Concept features the use of carbon material in the roof to achieve both a significant weight reduction and a lower center of gravity. In addition, the suede fabric used in the interior enhances driving excitement and pride of ownership.