Answer:
It emits some amount of water vapor and hot air
Step-by-step explanation:
Hydrogen fuel cell-powered cars are new technological cars powered by using pure hydrogen in its fuel tank. They are very efficient in use because they do not release any toxic gases like carbon dioxide into the atmosphere. It does not lead to any type of air pollution. It only emits a small amount of water vapor and hot air. These powered cars are god alternate of the cars that run on patrols and diesel but they have certain disadvantages also because hydrogen is a gas that is very flammable and easily catches fire.