Genesis unveils a sleek X Convertible concept EV It's the third 'X' concept but will never be built, sadly. Genesis has unveiled the X Convertible concept, showing off its design chops with an EV that builds on the previous Genesis X and X Speedium Coupe vehicles. It shares the architecture and electric powertrain with those cars, but uses a folding hardtop roof and is meant to evoke "design purity" and uses what Genesis calls an "anti-wedge parabolic" design. Gone are the extra bulgy fenders and aggressive front end, replaced by a more subtle design and cleaner, longer lines. That length is further accentuated by the short front overhang that gives it a protruding nose. The triangular headlights from the X Speedium are carried over, as are the double taillights. The hardtop roof has an integrated moonroof, offering drivers a view of the stars even when it's closed up.