Nice start to a driving sim.
For feedback: The setting is really cool driving/hovering around in the futuristic cloudscape. For the state of tech (and the fact that there was a speedometer on screen), I felt we should have been able to move much much faster. The number of islands it quite large so it might be nice to have an in-game map to at least have the overall scope of how many places there are which can be hard to keep track of while moving around. One idea to help give the player some reference might be split the total areas into a few zones, and each zone have slightly different color themes...or at least the roadway lines are different colors for each zone. It might also be nice to somehow mark off the path that we've driven on so we can tell what roads we've never traveled on yet.
From a gameplay perspective, I think it would be a good idea to have a couple of the target pickup items be found very quickly near the start of the game. This would be almost a tutorial to show us that all items can be picked up on the road. When I got to one of the hub/switching stations, my first thought was to drive over onto the island to look for items...of course I fell off....and was falling for a long time with no reset. I had to 'ctrl+alt+del' to end task and start over. If you do have a reset collider below, it needs to allow for a reset much faster. I think the most player should wait is about 3-4 seconds of falling.
The environment is well constructed and the music set a great mood.