Hydrogen cars
Hydrogen vehicle refers to a personal transportation vehicle, such as an automobile, that uses hydrogen as its on-board fuel for motive power, but can also refer to other vehicles, such as an aircraft, that use hydrogen in a similar fashion. Hydrogen stores energy more effectively than batteries, burns twice as efficiently in a fuel cell as gasoline does in an engine, and produces a single waste product, water.
A suggested benefit of large-scale deployment of hydrogen vehicles is that it could lead to decreased emissions of greenhouse gases and ozone precursors.The pollution generated at the point of use in the vehicle would be greatly reduced compared to conventional automobile engines. Further, the conversion of fossil fuels would be moved from the vehicle, as in today's automobiles, to centralized power plants in which the byproducts of combustion or gasification can be better controlled than at the tailpipe. However, there are both technical and economic challenges to implementing wide-scale use of hydrogen vehicles, as well as better and less expensive alternatives. The timeframe in which challenges may be overcome is likely to be at least several decades, and hydrogen vehicles may never become broadly available.
The motivation for switching to hydrogen fuel (vw engine) is to have energy security, so we would be less dependent on fossil fuels. And the second objective was to reduce atmospheric carbon dioxide and global warming and other environmental problems.. This could be a major reason why some prefer hydrogen or hybrid cars as a better alternative to fuel dependent cars.
