A Great UFO Sighting or a Clever Hoax in Germany? - Video

It is my opinion that this is simply a clever hoax and not a genuine UFO, but it is making the rounds on the internet and I expect it to go viral in a day or two.

Richard 

Triangular UFO over Kassel, Germany on June 26, 2014

 Triangular UFO over Kassel, Germany on June 26, 2014

Note that accompanied video
During a trip to the park with his son, this father caught an odd sight in the sky over over Kassel, Germany, a triangular UFO! Real or fake?