Good CGI is so realistic that you don't always know when you're looking at it. So, Ironically, CGI artists take it as a compliment when their work goes unnoticed.
It's not just the UFO that's fake in this video - it's the car and the sky and the camera shake. In other words, the whole video is CGI. Even the pinging of the "Driver's Door Open" warning
Will we ever have completely digital actors intermingling with real ones? Will we soon have feature films where dead actors are brought back to life through the miracle of CGI and motion capture? Will computer generated images of humans ever be so good that we can't distinguish them from the real thing in any way?
With computer graphics power increasing faster than Moore's Law, we've come a long way in seventeen years...
I don't know about you but I simply can't get enough VFX and Compositing breakdowns. The reason is that special effects are now so good that you don't always know they're there. It's pretty obvious with explosions, but what's definitely not so obvious is when a whole cityscape is fabricated