While hybrid vehicles have become more popular thanks to rapidly increasing gas prices over the last few years, there are other eco-friendly vehicle options being researched and tested. Some options you may hear about in the next few years include compressed natural gas or CNG, also called "BioGas", ethanol, other biofuels and liquid petroleum gas. Electric vehicles are also making a comeback, with Chevrolet recently announcing their new "Volt". In Europe, so-called "Smart Cars" are becoming popular. With their small, yet functional size and superior fuel efficiency, "Smart Cars" are a good choice for smaller European roads.
Many of today's newest trains are powered by magnet technology. Today's "green train" uses a permanent magnet motor, which is a modern engine technology that enables increased propulsion chain efficiency. This type of motor results in lesser operating costs as well as far reduced environmental impact. In addition, the "green trains" have an assistance system in place that reduces traction energy.
New buses are being tested in areas of the US that use biofuels instead of diesel fuel. Even in New Delhi, India, they are trying to replace old pollution hog buses with more eco-friendly buses that use compressed natural gas. New Delhi hopes to have 6000 of these buses in use in the next few years in order to combat the cities ever increasing pollution problems.
Airplanes are also getting a makeover, not just because it's an environmentally friendly thing to do, but because it will save costs over time. In 2007, Boeing unveiled an eco-friendly plane model called the "787 Dreamliner", which Boeing claims uses 20 percent less fuel, produces 20 percent lower emissions and also decreases maintenance costs by 30 percent from typical aircraft such as the 747.
Whether it's by airplane, bus, train or car, earth friendly transportation looks like it's here to stay.