White;
The whole need for a Gearbox comes from needing to keep an internal combustion engine in its quite limited torque range for a given roadspeed...this falls away with an electric motor where high torque is available from 0RPM, and all the way to max RPMs...it all comes down to the motor drive system (typically a variable frequency PWM system, and the most advanced ones have regenerative braking for max efficiency).
I think it's preferred to drive the Driveshaft directly, otherwise shifting would be a major issues (a clutch would be required to decouple the electric engine from drivetrain during shifting), or else...! ...or, it would be put into gear for a high or low speed range before moving, but could never be shifted while moving...
Cheers
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