Where do scientists hope to get hydrogen to use in cars?

Answer 1

Every gases main component is hydrogen. The sun gives off trillions of lbs of hydrogen every day. Even though its impossible to get anything to the sun, I'll give it about 20 yrs before they think of a way to get something to collects the gas there without burning and be able to come back to earth safely.

Another Answer

Every gases main component is not hydrogen. If you are trying to make an association between heaver elements and hydrogen atoms, all matter is the byproduct of hydrogen fusion in the core of stars. All matter is made up of the same sets of subatomic particles, but in different quantities in the nucleus and orbiting particles. Accurately fizzling larger elements into component subatomic pieces is not possible in our current stage of technology.

Hydrogen is plentiful on Earth. There is an incredible amount in the water of this planet. It can be separated from the oxygen through electrolysis.

The Sun fuses 620 million metric tons of hydrogen each second into 580 million metric tons of helium. About 4 million metric tons per second is generated as energy in the core of the star. This energy can take from seconds to 200,000 years to reach the surface and be broadcast as light and other forms of energy. Some forms of energy generated in the Suns core do not interact with matter as do photons, and therefore only take seconds to break free from the surface of the Sun. I don't think we will ever be able to mine our star for hydrogen. It would be easier to mine Saturn and/or Jupiter for the prime elements.