This video sucks, the commentator says "you guys" about 500 times, and the first 4 and a half minutes of the video give no value. Most of his information is wrong, I could tell you how to do it in about 2 simple sentences, but I wouldn't advise doing this.
R* knows people are doing it and I wouldn't be surprised if people get screwed once the stimulus package goes out. We gotta thank these youtube guys trying to get famous for calling attention to all the exploits but it's not how R* wants you to play the game. Just do missions, it's still easy to make some money that way.