So, how many of you have ever gotten behind the wheel of a car 你们当中有多少人，当你不应该开车的时候，
when you really shouldn't have been driving? 却还开车跟在另一部车后面？
Maybe you're out on the road for a long day, 有可能你已经开了一整天的车，
and you just wanted to get home. 心里只想回家。
You were tired, but you felt you could drive a few more miles. 你已身心俱疲，但感觉还能再多驾驶几英里。
Maybe you thought, I've had less to drink than everybody else, 大概你有想过，我喝得没有其他人多，
I should be the one to go home. 我可以驾车回家。
Or maybe your mind was just entirely elsewhere. 也或许你的大脑已经完全神游天外了。
Does this sound familiar to you? 这些你们听起来有点熟悉吧？
Now, in those situations, 现在，在这些情况下
wouldn't it be great if there was a button on your dashboard that you could push, 如果仪表盘上有一个按钮，你按一下，
and the car would get you home safely? 车就可以带你安安全全地回家,这会不会很棒？
Now, that's been the promise of the self-driving car, the autonomous vehicle, 如今，这些都是自动汽车能做到的，
and it's been the dream since at least 1939, 自动汽车从 1939 年起就一直是一个梦想。
when General Motors showcased this idea at their Futurama booth at the World's Fair. 那时通用汽车公司在世界展销会上展示了他们对未来汽车的理念
Now, it's been one of those dreams that's always seemed about 20 years in the future. 现在，它已成为那些看起来总要再等20年才能实现的梦想之一。
Now, two weeks ago, that dream took a step forward, 两个星期前，这个梦想取得了突破，
when the state of Nevada granted Google's self-driving car the very first license for an autonomous vehicle, 内华达州授予了谷歌自驾汽车第一个无人驾驶上路许可证，
clearly establishing that it's legal for them to test it on the roads in Nevada. 明确地表示他们在内华达州道路上测试是合法的。