That is incorrect. Toyota's Hybrid Synergy Drive is able to power the wheels with either 100% electric, or 100% gas, or a combination of the two using planetary gears. This allows the use of a more efficient engine running the Atkinson cycle, with the electric motors filling in for the reduced low-end torque.

At highway speeds the engine is driving the wheels directly, which is more efficient than converting torque to electric power to drive an electric motor. Honda's two-motor system runs much like the transmission you linked, but again drives the wheels directly at highway speeds.