This article has not been given a name, as such, the name Gru's Flying Scooter, is purely conjectural.
In the film Minions, Gru owns a small aircraft which is a combination of scooter and aeroplane.
The vehicle shares some resemblance to Grumobile; the wheels are foldable and are also used as propellers for flying. There are two seats for Gru and Kyle.
After the knighting ceremony of Kevin, Scarlet Overkill steals Queen Elizabeth II's crown but she's frozen by Gru's Freeze Ray, and Gru takes away the crown.
Gru then put the crown on Kyle's head and leaves Buckingham Palace, and all of the Minions follow him and regard him as the new boss.