The invention you are going to see is spectacular! The man of the images makes a helicopter by using only recyclable materials and a small but powerful engine.
The man stiches together some wood stiches, a plastic bottle cut with great precision and an engine. The entire machine cost about $3.
With a bit of patience and talent, you can also achieve such a helicopter, but we still wait for the next video when it will actually fly.
What do you think?