High Quality Content by WIKIPEDIA articles! The BYD F6DM is a planned plug-in hybrid mid-size sedan. A planned fully electric version was called F6e. The manufacturer, Chinese automaker BYD Auto, is owned by BYD Company Limited, China`s largest mobile phone battery maker. The car is most likely never going to be built, with BYD currently focusing their efforts on the smaller F3DM, the all-electric e6, and the hybrid SUV S8DM.