The first alternative fuel source I will discuss is Biodiesel.

Biodiesel a clean burning alternative fuel, produced from domestic, renewable resources. Biodiesel contains no petroleum, but it can be blended at any level with petroleum diesel to create a biodiesel blend. It can be used in compression-ignition (diesel) engines with little or no modifications. Biodiesel is simple to use, biodegradable, nontoxic, and essentially free of sulfur and aromatics. Biodiesel is produced from any fat or oil such as soybean oil, through a refinery process called transesterification. This process is a reaction of the oil with an alcohol to remove the glycerin, which is a by-product of biodiesel production. Fuel-grade biodiesel must be produced

Compressed Natural Gas (also known as CNG) is a clean burning fuel. It has significantly fewer harmful emissions than formulated gasoline. It can be stored in tanks on board a vehicle or cryogenically cooled to a liquid state. This is called Liquefied Natural Gas or (LNG). Refueling can be done easily if you are trained. However, there are a few cons. A compresser station would be needed for each vehicle. This costs between $2,000 to $4,000. That is a huge con. CNG is 90% methane, a major greenhouse gas. Maintenance may be more expensive. CNG will cost 15-20% more than regular gas. Fueling time can take up to hours so if you are in a hurry, you’ll have to take your bike.

Methanol is also a source for fuel rather then petroleum. Methanol or methyl alcohol is a clear colorless liquid that can be made from a variety of fossil fuel sources including coal and natural gas. It can also be made from the fermentation of plants like sugar beet, and amazingly enough car engines don't need much modification to run on meth

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