Port Town Aero Dive has been in the series since Brawl but it's from the F-Zero games. Mostly from F-Zero GX on Gamecube. Even though I played the game, I don't remember the track very well as it's been so long.
But in Smash Bros., it's a simple track to moves along with different paths of where the stage can take itself.
Not many hazards, except some brief moments where F-Zero race cars can hit you. But they're easy to dodge for the most part.
While I like it, it's more of a blander stage, so I don't love it.