Despite its eco-aspirations, the Impreza Design Concept still has Subaru DNA running through it. To go along with its sporty, staggered stance, the Design Concept features Subaru's legendary Symmetrical All-Wheel-Drive system to ensure traction and grip in any situation. To help deliver above-average fuel economy, the designers have installed rear diffusers under the bumper and accentuated the lip on the trunk hood to create less drag, all in the name of miles-per-gallon.