Exo One

Near the beginning of the level there are multiple alien structures in the water and on the land nearby. There is a structure in the water with a hole and you can see wind blowing through it that will increase your speed. The structure before that one was what I used to gain height, then in the clouds above I got as high as possible, I then noticed another cloud formation that was bigger so I aimed for it, got higher again and then used gravity drive for a second to hit speed of sound, flattened out to glide and whilst holding the glide I tapped the gravity function periodically to keep it going, the screen went red (almost like everything was red hot) and it popped shortly before reaching the water

EDIT: later on in the level I think there’s plenty of opportunities to do this although can’t confirm as I already had it. But there’s a few floating islands and orange boost gates that I’d be surprised if wouldn’t get this to pop