https://www.polygon.com/2017/9/5/16223328/destiny-2-sparrow-how-to-get

Destiny players were attached at the hip to their trusty Sparrows, the jet-fueled hovercraft that allowed Guardians to zoom across the game’s planets and moons. But while the patrol areas of Destiny 2’s worlds are generally comparable in size to those in the original game, it’s going to take way longer to traverse them, because you won’t have a vehicle.

Yes, Sparrows do exist in Destiny 2. But they’re not readily available; there’s no easy way to go out and get one. In the original Destiny, Guardians received a Sparrow as a matter of course: A basic one was given to the player during “The Warmind,” the game’s fourth campaign mission. Hell, Bungie eventually added an entire mode to the game just for Sparrow racing.