It is scientifically proven that with incentives there is an increase in motivation to do something- this is called the Drive Theory.

Sheldon and Raj discuss the pros and cons of getting tenured at the university.

In the final comedy sketch, Jerry asks, "Why doesn't the traffic school instructor speed more often. He's going there anyway..."

Jerry does something nicer for his dry cleaner, who then extends his family a discount. Jerry's girlfriend claims to be his wife in order to get the discount.

Kramer has forgotten where he parked his car in a multi-level parking garage of a shopping mall and the gang walk around for an eternity looking for the car. Jerry needs to urinate and Kramer encourages him to do so in a dark corner where no one can see him. While doing so, he is spotted by an officer, and held in the officer's booth. Later in the episode, George is caught doing the same thing.