1: No. 2: ... ... ... 3: My favorite endless runner ever is dark corridors 2. You are a girl in a haunted school running form a ghost. Everything in the school is trying to kill you. You have goals to complete and as you finish them you unlock new parts of the story and new characters and a new costumes for each character. The girl you start as has a devil costume for some reason. The ghost is a girl named Lucy and is the final character you unlock. I love the story and atmosphere. Years later I still adore the game. It was bold and unique. I have not played a game quite like it before or since. Having just played your game I struggle to remember anything about it. I could not tell you the color of the car I was controlling. Just changing the art to something unique would go a long way. If it was a fish trying to climb a waterfall that would be more memorable (there is a Chinese legend about I think a carp climbing a waterfall and becoming a dragon. It is where the pokemon Majicarp comes from.)
4: I didn't find any bugs. I can tell you are not a huge team making billion dollar games. I don't want to be too negative. You made a game and that is impressive. It is simply not a very memorable game.