Nice and original concept! Some controls' information would have been great (even if they are not in the game but in the itch.io page itself).

I am not sure about the 4-colors palette, maybe I have understood it wrong... There are always only 4 colors in the screen, but I thought the idea was to use only 4 colors in the entire game. If not, then this is thinking out-of-the-box!

That's... and original concept. I liked the idea and story. Also, I liked changing backgrounds when driving. Would like more driving and changing lanes, though.