During vehicle travel, especially on highways or freeways, any vehicle which is driving faster that you, either behind or in front, which can be used as protection against getting written up for a radar speed violation. The theory being that the "radar bait" vehicle would be written up rather than you. If if you are also exceeding the posted speed limit.

(noun) A successful type of theft which results in an acceptable, impressive and rewarding payday for the protagonist.