Because that global economic decline dried up demand for oil, the price of hydrocarbons fell 75 percent.
hydrocarbons are an amazingly energy-dense and affordable form of storage for the energy needed to propel a vehicle.
And wind power must be supplemented with hydrocarbons for reliability.
hydrocarbon hy·dro·car·bon (hī'drə-kär'bən)
An organic compound, such as benzene and methane, that contains only carbon and hydrogen.
Note: Many hydrocarbons are used as fuels. Some examples of hydrocarbon fuels are the components of gasoline; methane, which is the main ingredient of natural gas; and some components of wood.