Random rocket league face #2: Helicopter engine audo

In the helicopter engine audio (obtained from owning the rocket pass in season 3 after f2p) if you hover in the air for over 7 seconds without touching the ground, the song 'Ride of the Valkyries' plays this is an easter egg which refers to the 1980's film 'The Blues Brothers' where this song plays as a car is falling out of the sky.

From my knowledge the helicopter engine audio is the only audio which changes/ reacts to movement in the entire game.