The sparrow throws out red or green ghost "shells" at random while boosting.
Sparks will also appear on the left or right side of the sparrow, with color and size dependent on how hard you are leaning in that direction.
The "Quadracycle" sparrow was a vehicle I had the pleasure of doing for Solstice 2022. When presented with the concept, I knew I wanted to make our take on a go-kart sparrow something memorable, while also paying homage to some other kart racing games. As such, "Quadracycle" will emit showers of sparks on hard left or right turns, and will sometimes throw out green or red "Ghost" shells.
Special Thanks:
Mark Flieg: - Rewards VFX
https://www.artstation.com/mfliegjr
Matt Lichy: Hard-Surface
https://www.artstation.com/mlichy911
Michael Climer: Hard-Surface Lead
https://www.artstation.com/mclimer
And to everyone else at Bungie who helped support me and contributed to this wonderful world. "Teams are stronger than heroes".