With numerous environmental concerns on the horizon and more than 600 million cars operating in the world today, it's not difficult to see that finding and implementing cleaner burning fuel engines is a must if we are to promote a greener earth for future generations. Thankfully, many alternatives to powering vehicle engines exist. Some of these include biodiesel, cellulosic ethanol, biokerosene and alternative rocket fuels. Hybrid and electric-powered engines are other alternatives.

1. Biodiesel Hummers


Biodiesel fuel uses biomass materials – decaying organic material – to create energy. This fuel burns cleaner than traditional gasoline engines, creating less air pollution and less carbon emissions. It is also relatively inexpensive to switch your current engine to one that will burn biodiesel. That is why even gas guzzling Hummers can benefit from it. Biodiesel Hummers is a new trend for Hummie lovers.

2. Hybrid Vehicles

Hybrid vehicles, a popular and more mainstream alternative, use two or more distinct fuel sources to power a vehicle. Usually, this is a combination of gasoline and electricity. By using electricity part of the time to power an engine, less harmful byproducts are released into the air. This is also why these vehicles see extended gas mileage, a major plus in a time when gas prices are gouging. Moreover, among the other benefits of hybrid cars they, too, can use electricity and ethanol instead of gasoline.

3. Electric Cars with Nanotechnology Batteries

Nanotechnology batteries have given a major boost to electric cars. These batteries are lighter, take less time to recharge and have a longer life than traditional car batteries. This vehicle produces zero harmful emission, making it one of the best engine alternatives for a greener earth.

4. Road Races

Even the race world has seen changes to promote a cleaner environment, thanks to advances in biofuel technology. Audi was able to demonstrate the power of its combination biodiesel and traditional diesel fuel burning engine when it won a major road race recently.

5. Powerboat Races

Biodiesel road races have been followed by biodiesel powerboat races. The very same fuel combination used in powerboats lead them to winning the race. Biodiesel is beneficial for boat owners also because it can save a buck. Fuel burns much cleaner thus less maintenance and repair work required.

6. Biokerosene as Jet Fuel

Another fuel alternative made from biomass materials is biokerosene. Though it has not yet been approved for mass aviation use, this new fuel could mean significantly lower jet fuel prices, which would mean cheaper commercial flight tickets for that trip to Hawaii you've always wanted to take.

7. Future Space Travels

With light years separating us from even our nearest outer star, it takes unimaginable power to propel a vehicle through space to reach such a destination. With current fossil fuel options to power spacecraft, we are nowhere near reaching the nearest galaxy in reasonable time, let alone deep space. This is why alternative rocket fuels are the future of space travel.