It is absolutely very rare for a 3 year old kid to know how to read, so I think that we must absolutely believe that this video is not fake.
This kid reminds me a bit of myself to be honest. My uncle always tell me when I was about 3-4 year old and knew almost every car on the roads of my city. I didn’t know how to read on that days too, like the guy on the video, so all of that becomes an melancholic story that I absolutely want to share with you!