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I can't understand why if there are 4 motors, there are just 2 transmissions.

They say 1 transmission per axle... maybe they mean 4 transmissions, which would be single speed reduction to take 12,000 RPM from the motor to ~2400 RPM (at 260 km/h!) to the wheels.

Permanent magnet motors (hence no field weakening) with a (presumably) fixed ratio transmission ... I suppose they can get away with this in a sports car with plenty of torque.
 

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No. It's actually 2 transmissions. They're like transverse style transmissions. They're not the standard longitude mounted transmissions. There are two electric motors linked to input shafts on each axle.
Wow. And 4 controllers, no less. I guess in a no-holds-barred sports car, you can afford to do that.

But I don't see how the electric motors interact with each other. In other words, it seems to me that this is surely two independent gearboxes (each with one input shaft driving one output shaft) in one housing. I suppose it saves on space and oil, and two less drain plugs and filler plugs (since they do the same thing at the other axle).

Having said that, maybe it's some sort of limited slip arrangement whereby if one of the paired electric motors fails, the other can take over seamlessly, although with half the power.Well, 3/4 of the power, since there are 4 motors.

Maybe all this quadruplication is to get the parts into high volume more quickly, on a vehicle that will obviously have limited sales.
 
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