在文中，特斯拉解释了1929年开发的范德·格拉夫起电机不能创造能源，但是可以分离原子内部的电荷并以备后用的原理。

In the piece Tesla explains that the Van DE Graaff generator, developed in 1929, cannot create energy but that it can separate the charges within an atom to be stored and utilized later.

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汽车制造商和能源公司特斯拉提交加州汽车管理局的报告显示，2016年已开始在加州公开道路上测试四辆自动驾驶车。

The automaker and energy company started testing four self-driving cars on California's public roads in 2016, according to its disengagement report filed with the California DMV.

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