EVEN THOUGH I understand how it works, I consistently find Google's ability to know how long it will take me to drive somewhere nothing less than magical. GPS signals stream location and speed data from the legion of smartphones in vehicles on the roads between my origin and my destination; it takes only a bit of math to come up with an estimate accurate to within a few minutes.

中文翻译：

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Covid-19 时期的隐私


尽管我了解它是如何工作的，但我始终发现谷歌能够知道我开车去某个地方需要多长时间，这简直太神奇了。 GPS 信号从我的出发地和目的地之间的道路上的车辆中的大量智能手机传输位置和速度数据；只需要一点数学知识就可以在几分钟内得出准确的估计值。