Why is single payer better than multiple payers?

[Vox Moi]

9. Humm … how about single payer for all car maintenance?

Everyone agrees that humans and cars should be healthy. (HMO, AMO)
You might make a better car, and the corporations that make cars might consider themselves to be people but in the end it's always a question of maintenance. A single-payer system of automobile maintenance would have many of the same benefits as it would in health care. How would you like to look up a mechanic and see how his outcomes were … in the context of all mechanics? How about the maintenance and repairs required a specific model of car or truck, as serviced everywhere? Things like Angie's list lack the power of the denominator. Denominators are what Single Payer is all about.
Don't rely on Angie's list for your next bypass operation … support single payer.