1syuzh. - A super-high-speed ball train of the IG Yarmolchuk system, which moves along the chute on two caterpillar hollow balls. 2syuzh. - Tests of a new fire engine in Moscow. 3syuzh. - Mock-up natural filming according to the method of the artist N. Nikitchenko. 4syuzh. - The movement of a motor boat on floats.