VICE uses a picture of Gardens by the Bay in a story about a Saudi Arabia megacity, leaving people perplexed http://www.newsloop.co/u/nw3220
I live in Singapore. So there was online site or something that uses a picture of an attraction in Singapore to represent something from Saudi Arabia. Vice is considered a popular and reliable source, I guess. This tells that you can never trust whatever you see 100%, especially online.
I'm from Singapore too, after watching the promotional video I believe that the video is just a preliminary research video done by third party agencies. Definitely not by the Saudi government. Many of the shots in the video were probably copied from other sources too.