Most Teslas have dual motors, one between the front wheels and one between the rear wheels,
which improves efficiency, traction, and performance.
This is like all-wheel drive or four-wheel drive but better because there's no drive shaft.
For hard acceleration the car sends full power to both motors,
but at cruising speed the car sends less power to the larger rear motor.
Also, the motors are used as generators when slowing down, and two motors recharge the battery more than one motor.
Rear-wheel drive (single motor) is now only an option on Model 3.
RWD still has good traction because of the large battery pack at the bottom.
There are thousands of RWD Teslas driving Norway's snowy roads.
There's a rare case when two motors saves the day.
If the car detects that one motor isn't working properly, it disables that motor and keeps going.
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