Thus, we need to make a lot of development in this field to utilize the proper economic and practical benefits offered by the biofuels. The most important step is to make the biofuels as energy efficient as gasoline which is made from petroleum. Until and unless we make ethanol as efficient as gasoline, we will only be putting more pressure on our farmlands to grow more biofuel crops and not get adequate returns on our investment. Our efforts which are input have to be made profitable and worthwhile by the sum total of output or else we are on the wrong path, this is the standard on which energy efficiency can be measured. Right now, most of the ethanol is derived from corn and is only about 20% energy efficient and Biodiesel fuel is about 69% energy efficient as compared to 75% efficiency of petroleum derived gasoline. However, a glimmer of hope has arisen with the possibility of charting out more progress in the field of cellulose-derived ethanol which peaks at 85% efficiency, the highest percentage among the current lot of alternative energy probables.

The current economic and political factors-recession, national instability in areas like-middle east, wars and terrorism, uncooperative oil rich nations and so on, has led to the mass awareness of the necessity to shift reliance from oil which in turn has led to a surge among analysts in predicting a boost for and surge in biofuel research, development and availability. This has also led to a shift in the focus of stock market investors as is evident from recent stats which show that they are expecting better profitability to from biofuels and not from oil investments. A worldwide shift indicates that there exists a real possibility of biofuels supplying a major part-as high as 7% – of the world’s need for total transportation fuels by 2030 as demand for diesel and gasoline will dramatically slow down and all the major governments will continue to provide incentives to encourage the use of eco-friendly fuel.

Hybrid automobiles, which use electric motors and gas or diesel engines, also are being created with some positive outcomes. But hybrids are more expected to serve as a connection from one technology to the other.

It also will be attracting to see how auto manufacturers organize the proprietary technology that further develops fuel cells. Obviously the fuel cell developer will have a good deal of say in manufacturing and vehicle design in future.

Certainly, the incorporation of any alternative power will not take place overnight. Such revolution could take 15 to 20 years before any thing could arise in technology. But if fuel cell demonstrates to the alternative power source the auto manufacturers are looking for, the result will be an impressive change in what makes a vehicle go; as well as the kind of plants required to produce them.

>It is very important to seek workable and affordable sources of alternative energy before the world completely uses the stock of fossil fuels which is already limited. Many countries have started working to introduce alternative power schemes and some have already invested money into exploring and even introducing different sources of renewable energy. While it is important that we become less dependent or not dependent at all on fossil fuels, many kinds of alternative power has its disadvantages as well as their noticeable advantages. It will show that advantages will outweigh the disadvantages in many cases.

Some of the examples of alternative power are wind energy, bio fuels, solar energy, hydropower and some other renewable sources.