A young Ukrainian inventor who received a patent for his flying electric car said Tuesday he expected his invention could soon go into mass production. \"Eco-Grieg\" is a hybrid electric vehicle and helicopter that is cheap to run. It was also \"absolutely green,\" Alexander Avramenko, a student at the Ukrainian Small Academy of Sciences, told Xinhua. The vehicle can remain airborne for about an hour. Almost everyone can drive it as it has automatic transmission and a desk control console. Avramenko said his innovation would be used in areas where road transportation is not permitted.