Natural gas: The next alternative fuel?

(AOL Autos) — Regular readers of AOL Autos know that we have done a series of stories on the development and increasing popularity of cars that run — or will eventually run — on alternative fuels.

We’ve written about hybrids, clean-diesel engines, fuel-cell technology, ethanol and more.

That brings us to another entry in the auto industry’s ongoing research and development of green-technology: compressed natural gas (CNG). Scientists are trying to determine which alternative fuel will best strike a balance between being environmentally friendly and commercial viability.

CNG might be the answer.

CNN