transient torque damper not shown may also be implemented between the engine 12 and the input member 17 of the transmission in the embodiment depicted the engine 12 may be a fossil fuel engine such as a gasoline or diesel engine which is readily adapted to provide its available power output typically delivered at a selectable number of revolutions per minute rpm irrespective of the means by which the engine 12 is connected to the transmission input member 17 the transmission input member 17 is operatively connected to a planetary gear set in the transmission 614 an output member 19 of the transmission 614 is connected to a final drive 16 the transmission 614 utilizes three differential gear sets preferably in the nature of planetary gear sets 620 630 and 640 the planetary gear set 620 employs an outer gear member 624 typically designated as the ring gear the ring gear member 624 circumscribes an inner gear member 622 typically designated as the sun gear a carrier member 626 rotatably supports a plurality of planet gears 627 such that each planet gear 627 simultaneously and meshingly engages both the outer ring gear member 624 and the inner sun gear member 622 of the first planetary gear set 620 the planetary gear set 630 also employs an outer gear member 634 typically designated as the ring gear the ring gear member 634 circumscribes an inner gear member 632 typically designated as the sun gear a carrier member 636.