A hybrid drive unit, comprising: a hybrid input shaft; a first planetary gear set coupled to said hybrid input shaft, comprising: a first planetary gear set sun gear; a first planetary gear set carrier; and a first planetary gear set ring gear; a second planetary gear set coupled to said first planetary gear set, comprising: a second planetary gear set sun gear; a second planetary gear set carrier; and a second planetary gear set ring gear; a first electric machine coupled to said first planetary gear set sun gear; a second electric machine coupled to said first planetary gear set ring gear; a first clutch mechanism configured to selectively unload said second planetary gear set; a second clutch mechanism configured to selectively couple said second planetary gear set ring gear to a hybrid drive unit housing; a third clutch mechanism; an output shaft; and characterized by: said first planetary gear set carrier is coupled to said hybrid input shaft and said second planetary gear set sun gear is coupled to said first planetary gear set ring gear, said second planetary gear set carrier is selectively coupled to said first planetary gear set sun gear by said first clutch mechanism, said second planetary gear set carrier is coupled to said output shaft, said first planetary gear set ring gear, said second planetary gear set sun gear, and said second electric machine are all selectively coupled to said output shaft by said third clutch mechanism, and said second planetary gear set carrier is coupled to said output shaft by a plurality of gears (35, 36, 37, 38). a hybrid input shaft; a first planetary gear set coupled to said hybrid input shaft, comprising: a first planetary gear set sun gear; a first planetary gear set carrier; and a first planetary gear set ring gear; a first planetary gear set sun gear; a first planetary gear set carrier; and a first planetary gear set ring gear; a second planetary gear set coupled to said first planetary gear set, comprising: a second planetary gear set sun gear; a second planetary gear set carrier; and a second planetary gear set ring gear; a second planetary gear set sun gear; a second planetary gear set carrier; and a second planetary gear set ring gear; a first electric machine coupled to said first planetary gear set sun gear; a second electric machine coupled to said first planetary gear set ring gear; a first clutch mechanism configured to selectively unload said second planetary gear set; a second clutch mechanism configured to selectively couple said second planetary gear set ring gear to a hybrid drive unit housing; a third clutch mechanism; an output shaft; and characterized by: said first planetary gear set carrier is coupled to said hybrid input shaft and said second planetary gear set sun gear is coupled to said first planetary gear set ring gear, said second planetary gear set carrier is selectively coupled to said first planetary gear set sun gear by said first clutch mechanism, said second planetary gear set carrier is coupled to said output shaft, said first planetary gear set ring gear, said second planetary gear set sun gear, and said second electric machine are all selectively coupled to said output shaft by said third clutch mechanism, and said second planetary gear set carrier is coupled to said output shaft by a plurality of gears (35, 36, 37, 38). said first planetary gear set carrier is coupled to said hybrid input shaft and said second planetary gear set sun gear is coupled to said first planetary gear set ring gear, said second planetary gear set carrier is selectively coupled to said first planetary gear set sun gear by said first clutch mechanism, said second planetary gear set carrier is coupled to said output shaft, said first planetary gear set ring gear, said second planetary gear set sun gear, and said second electric machine are all selectively coupled to said output shaft by said third clutch mechanism, and said second planetary gear set carrier is coupled to said output shaft by a plurality of gears (35, 36, 37, 38).