All levels unlocked.
You were minding your own business driving a bus, when you were announced that some terrorists have put a bomb on your bus and now you have to maintain your speed at a certain level, otherwise your bus will explode. You can see on your speed-o-meter in the bottom left corner of your screen a green line, which represents the minimum speed you have to keep. But you also have to be aware of your fuel, because you can only keep your speed up if you have enough energy, so pick up the fuel power ups along the way that help you go on. Use your arrow keys to drive the bus and the space bar to brake and make sure you do not crash into the other cars in traffic, or you will damage it. You have to get to the finish line of each track before your time runs out. Try not to hit the pedestrians because you will have a lower score. Keep your eyes on your fuel bar in the right part of the screen, your health and distance bars in the left part of your screen and your timer in the bottom right corner. Have a blast!