translation.en: Here's why: Once they become ubiquitous, each year, these vehicles will save tens of thousands of lives in the United States alone and a million globally.
translation.zh: 原因如下： 一旦它们普及起来， 每年，这些车辆都将拯救 成千上万的生命，这仅仅在美国， 在全世界将是数千万。