Hybrid plug-in vehicles have both a battery plus a conventional gasoline-powered engine.

In most cases, they are sold as conventional gasoline without any mark of methanol content.

Automakers also expect loan money to be available for improving conventional gasoline engine and transmission performance.

Ford is bringing fuel-saving Auto Start-Stop technology to conventional gasoline engines across the Ford model lineup.

Gasoline-electric hybrid cars are gaining popularity but still carry a premium over conventional gasoline and diesel cars.

The company will manufacture conventional gasoline-powered versions of the SUV, and will later roll out greener models.

This type of fuel had its advantages, as it didn't spoil nearly as rapidly as conventional gasoline.

The converted Prius will burn a combination of conventional gasoline and algal fuel created by Sapphire Energy.

Ford claims the engine delivers 20 percent better fuel economy than conventional gasoline engines offering the same power.

Hybrid-electric vehicles like the General Motors Co Chevy Volt offer essentially the same range as conventional gasoline-powered vehicles.

Bio-isooctane can be used as a direct replacement for gasoline, or blended with conventional gasoline much like ethanol.

For years, the Vehicle Technology Office has been focused on swapping out conventional gasoline with more environmentally friendly biofuels.

Fuel-cell cars can refuel within minutes and travel more than double that distance, roughly on par with conventional gasoline-powered cars.

The electric 500 will follow the conventional gasoline-powered model that will arrive in the United States at the end of the year.

But GM plans to more fully embrace alternative fuels, like ethanol and a fully electric car, and improve the conventional gasoline engine.

But the country's state refiners are vocally against it, worried that expanding methanol supply will erode their dominant market share of conventional gasoline.