Awesome, but...
The game has a great premise, but it has some problems.
The random numbers that you use to generate enemies has a problem, as there are often long periods of time with no enemies. I feel that you should really make sure there is always an enemy on the screen. Also, sometimes you'll be in the air and run out of fuel and explode - I think it'd be a lot better if once the player runs out of gas they'd simply lose control and not explode (so that by the time they hit the ground, if they didn't have the points required they'd lose).
In closing, I have no doubt that you have great talent and you will make a name for yourself. I have no doubt that version two will be amazing, should you choose to make it.