That's some serious bugs :O I really sorry, but i can't test for Mac :( on windows and linux it works fine :c
Really sorry. If you have access to some other PC I encourage you to try there.
Also. If you win (reach 40320km/h) the ship should fly to the rights and there should be "you escaped Black hole".
If you lose (reach 0km/h) the ship will fly left with popup: "you have become food for black hole"