Though we continue to rely on non-renewable energy resources such as oil, the stress today is on finding alternative sources of energy. Great efforts are being made to harness and popularise the use of renewable energy sources such as the wind and the sun.

Electricity is a major energy source that is in the running to become the most important form of energy in the future. electric cars are already a reality today, even though most vehicles continue to rely on petroleum products. People like the Hong Kong inventor Lucien Gambarota have been trying to make innovations that will allow every person to contribute towards improving the environment.

As the world makes efforts to go "green," and the demand for environment-friendly cars increases, electric cars should soon take over as the most-preferred mode of transport.

However, automobile developers are looking to several other forms of fuel such as hydrogen fuel, highly compressed air and even garbage, among a host of other things. Perhaps there will someday be a car which would have a mechanism to use household garbage as fuel. Then, in one shot we would have solved the problem of garbage disposal as well as that of finding alternative fuels!