This is a gorgeous game! I did encounter the mentioned bug quite a few times, but the puzzles were well laid out and intuitive. Maybe you can add more mechanics later on as well.
Ahh thanks for looking past the huge bugs a bit ;-) We'll definitely look into adding more features, like a tile that holds a car in it's place for 1 'tick', that could add a lot of new cool level designs! Thanks for checking it out!
