高速盘车是很容易实现的，而且在国内已经实现了。
High speed barring gear is easy to perform and it has already been performed at home.
仍然，麝香说，修改后的系统会让驾驶员的手离开了方向盘长达三分钟后一辆车在高速公路上行驶时。
Still, Musk said, the revised system would allow a driver's hands to be off the wheel for up to three minutes while following a car at highway speeds.
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