My ideas about more ways of making cars more energy efficient and eco-friendly

This year, the environment has been the main theme in most events such as: green buildings, car concepts using hybrid and fuel cells, hydrogen as a substitute of oil fuels and many others. Next step is pushing the energy efficiency and reducing the carbon dioxide down to 50% or less. In order to do such thing, there should be ways of getting rid of the pollution which is mainly caused by cars, buses or any other kind of transportation which utilizes fuel as their energy source.

The cars, besides having solar panels, hybrid cars or hydrogen as their only energy source they should have as well devices for the use of wind or the movement of different parts of the car. For example, the wind. It could be used while the car is moving. The wind created by the speed could give constant energy to the car and would be useful in those cases where sunlight isn't available. As for movement of the car, one of my examples would be the use of the tire rotation to give energy. In that case, the tires could use magnets to give energy to the car.

There might be more ways of producing energy for cars that doesn't affect the environment, but oil sellers wouldn't like those ideas since it would make their business vanish. What keeps them on market is that since people have enough money to buy hybrid cars because the economy isn't good lately. The best choice would be lowering the prices of hybrid cars so it becomes more accessible to those people who doesn't have the economical resources to buy one. That's the problem! the environment should be protected but you get to pay a big amount of money in order to protect it... that doesn't sound fair, it is supposed to be accessible for people to get these kind of technology at cheaper prices so they can contribute something to protect the environment.