Agent RD, who sent this pic, pointed out that a Prius does not actually burn 1NO GAS, or even no gas. Last time we checked, a late-model Prius gets 50 mpg, which means it still requires gas to function. So the driver here is incorrect in his/her bragging. This evokes the annoying self-importance/self-righteousness among certain people who bought Priuses. Buying a Prius instead of another car is indeed environmentally friendly, but we’re not giving you a medal, okay?
(Interesting question: What happens when you run out of gas in a Prius? Can you still drive to a gas station at 10 mph, using only the electric motor?)