SJ Bus Install Jet System?

When I first saw this video, it crossed my mind that this is some kinda CGI effect done by someone who is too free with nothing better to do (NBTD) but upon closer inspection ... maybe not!

I looked realistic enough to me. The question is, if this is real .... the SJ Bus is actually a moving time bomb waiting to explode? I think I saw passengers in the bus, what about their safety? No wonder we have so many accidents involving buses!

One way ticket to heaven/hell!