Good graphics, decent game
I feel kinda sorry for you guys not getting a single review, so I shall see what I can do about that :)
The general idea of this game may not be all new, there lots of games with the objective of getting something from A to B and then get back A again to repeat the process. You have tried adding small twists to make this less repetitive, but I must say that it doesn't really work out: The jetpack is a good idea, and so is the cars, but when you're running to the left the cars comes so fast that even by pressing the up key directly you don't have time to avoid it.
A tactic I used while playing was to fly a little bit over the ground when going left (just enough to avoid the cars), and run when going right so that the fuel refilled. This seems to be a foolproof tactic, and by delivering one single pie in this way I had practically mastered the game.
So my suggestions (if you were to make a an update or a sequel):
-Make the cars go slower, and maybe make them come from both directions.
-Add something that you need to avoid while in mid-air, e.g birds.
-Maybe make the ground more varying with hills, stairs and so on.
Now, enough with the criticism. I really like the graphic style of the game, and the music made a good fit with the theme of the game. Several game modes is always a plus as well :)
To sum it up, it was a decent game with good graphics, but it could use more to it to be truly great.