Level skip:

In APB, if you hold down OPT 1 and OPT 2, and run into a donut (or through the Donut shop) your quota will be filled and you will be returned to the station and proceed to the next level.

Skip to level 99:

When your quota is met, hold down OPT 1 and OPT 2 when you touch the Officer Bob parking space. This will warp you to level 99. (The game will not end, just repeat level 99 with random quotas).