The authorities are aware of the Reddit video, yes?

It appears to be a shaken hand held video taken as if trained on the truck for the purpose of recording the terrorist act. Who is this guy whom’s voice is obvious. It seems it very well is another ISIS member. 

It very well could be a copy cat terrorist act. These guys are probably half-cocked all the time. 

The terrorist acts are all symbolism. Venues of wealth and power. The football stadium where thousands of people congregate to watch millionaire college athletes, the Gold Trump Tower, and the Musk Tesla. It is all symbols to terrify Americans into a following them to end the Plutocrats. They were probably inspired by the assassination of the CEO and the reaction by large number of people that support the assassin. ISIS is preying on the American public so they can take control.