Yes. Mass producing cars is not the problem. The fuel for fuel cells is too expensive, so far.
Only if the marketplace demands it. Like everything else, "Supply and Demand."
ac
Carbon Dioxide of course!
Fuel cells are basically a storage device for energy. In the cars on the road today they are gasoline tanks. In hybrid cars, they are gasoline tanks and batterys. In GM's Hydrogen car, the fuel cell is the Hydrogen tank.
We will have to run electric cars, which exist today. There is talk also of cars that run on compressed air. Hydrogen is another fuel source that will run cars if we can manufacture it cheaply enough, and store it safely in the cars.
There is no such thing as a water fueled car. Even steam cars used some form of fuel to create the steam. You can extract Hydrogen from water to power a car but as of this time 2015 there are no cars being produced that use water as a fuel.
Electric cars reduce the amount of fuel-dependent cars on the road. As more electric cars are produced, the US will need fewer barrels of gas.
You can power cars through electricity or Hydrogen fuel cells (only available in california)
Cells use the energy produced to fuel other reactions necessary for them to survive.
Possibly. Hydrogen car cost more then hybrid cars. But as of today, those cars are possibly in development.
There are currently no Fuel Cell vehicles being sold to the public. Only prototypes have been built.
no, they just mean that the engine has a supply of hydrogen to run on rather than any other fuel