It's a clean looking game - very readable and quick to understand.
I have to say that the difficulty was a little high for me. But as a high score game, I suppose that was the point.
I feel like you could have made a more compelling experience if there were docking stations acting like pit stops where you could extend your run. As it currently stands the goal is a little too limited.
The music was suitable for the title screen, but was quickly iritating looping in game - I'd have probably put more of a focus on ambient effects or perhaps sound effects to enhance the movement or braking mechanics.
Side note: I noticed that you sometimes start the game with minus score, you might want to clamp that value in future :)