The rules of Cash Cab are simple. It is you answer questions on any type of trivia to win money. But if you get three strikes, which is a missed question, you lose all your accumulated money and are kicked out of the cab. The show is great because you can actually learn something new every time you watch the show and seeing the people;s faces when they find out they are on the show is also enjoyable. There are few bad points except that the game is repetitive which is only bad if you get bored easily. Overall, this is a great show and I recommend that people should watch this.