为提供某种节流阀以加速或减速，该车的设计者们增加了“EJ200”喷气式发动机。

To provide some form of throttle to allow acceleration and deceleration, the vehicle’s designers added the EJ200 jet engine.

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这意味着要确保声音传递诸如方向与速度，以及汽车是否在加速或减速等信息。

That means ensuring the sounds convey information, such as direction and speed, and whether the vehicle is accelerating or slowing.

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在第二次测试，这款车被训练识别四种模式，除了向左、向右外，驾驶者还能通过“想”使车辆加速或减速。

In a second test the car was trained to recognise four patterns, enabling the driver to accelerate or decelerate the vehicle.

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