Vakhtang Dvalishvili (in the black and white photo) and the FF he built in Georgia back in 1978. It was based on the last model of Vyatka 150cc scooter, with electronic ignition, which came out in 1973.

The following words are an interpretation of the text on the CAMMOTO magazine page shown here.
Many thanks to Colin Russell's step-son Ruslan, for the basic translation, which I have tweaked. PNB

SELF-BUILT MOTORCYCLE
Presenting the winner of the competition.
MARI
Vakhtang George Dvalishvili is the 42 year-old creator of several home-built ‘MARI’ cars. An art director from the city of Kutaisi, in Georgia, his cars have participated in both international and intra-union (within the USSR) runs, as well as being demonstrated at various shows.
This half-enclosed scooter is a conceptual prototype created in 1978. It consists of a monocoque body with a plastic fairing. The engine is from a Vyatka Electron scooter.
Dimensions: 1800 x 600 x 1400 mm; ground clearance: 180 mm; wheelbase: 1300 mm; dry weight: 120 kg; kerb weight: 150 kg; maximum speed: 80 km/h.

The following information, about standard Vyatkas, comes from Wikipedia. Amazing to read that a million standard Vyatkas were produced!

Vyatka (Russian: Вятка) was a brand of Soviet scooters manufactured by the Vyatskiye Polyany Machine-Building Plant in Vyatskiye Polyany between 1956 and 1979. The brand name was derived from both the river upon which it was located and a breed of horse native to the region.

The VP-150 (Russian: ВП-150) was an unlicensed copy of the Vespa 150, first built in 1956. It was constructed of thicker steel than the Vespa to cope with the poorer Russian roads. Other minor differences included thicker tyres (10x4.0 instead of 10x3.5) and an adjustable headlamp. A glovebox was also incorporated under the front seat. 300,000 models were constructed before production terminated in 1965 after complaints from Piaggio.[1]

The V-150M Vyatka-2 was introduced in 1966 as a successor to the VP150. It used the same engine, but mounted centrally to give better stability. Final drive was by means of an enclosed chain. The model also utilized a tubular frame and had completely different bodywork. An updated model Vyatka-3 Elektron with electronic ignition was introduced in 1973. Production ceased in 1979 with over one million units being produced.[1] However, an excess of new old stock allowed dealers to carry on selling complete scooters until 1989 and spare parts until 1999.[2]