The ad was shot in one single take and did not make use of CGI effects. The imagery is quite powerful, even more so knowing that what you see is what actually took place on that dark and ominous track. You can see how much work went into the staging by watching this behind-the-scenes video.
LeEco, the Chinese company that bought US-based TV giant Vizio back in July, just announced its first smartphones in the US. They have great specs, run Android, and the good news is, they are super, super cheap.