Does a Tesla have a gear(s)?
or any other electric car?
They do not need MULTIPLE gears like a gasoline/deisel powered car. The have torque available all all motor RPMs and have but a single SPEED REDUCTION gear in the drivetrain. (Much like some airplanes have for the propeller so it spins at a lower speed than the direct engine RPM.... PSRU Propeller Speed Reduction Unit)