From heavy duty trucks to consumer sedans, commercial vans to armored vehicles, automakers across the globe are finding new ways to emit less.
"There are no emissions being emitted at all," says Gregory McKay of Griffin, Inc. "There's nothing here."
Outside the Washington Convention Center Wednesday, auto industry experts gave special guests an alternative fuel Ride and Drive, the chance to get a first-hand look at a wide range of alternative fuel options from clean diesel to propane, hybrids, and hydrogen.
"Right here in the back, where you put pressurized hydrogen," says Robert Langford of Honda.
Honda is trading gasoline for pressurized hydrogen in its FCX Clarity. The result: water emissions, not harmful gases.
"This is the future of transportation," Langford says.
Even the biggest trucks on the road are lowering their impact by combing natural gas and diesel fuel.
"So you make less emissions in the air, you spend less on fuel, and you have a car that can haul 80,000 pounds across the highway," says Skip Baker of Baker Electromotive.
By 2025, automakers will be required to produce cars that average 55 mpg.
General Motors says its clean diesel option is one step forward.
"It does take a lot of investment in our vehicles but we are committed to doing that," says Mark Carney of the General Motors Company.
As gas prices soar and consumers look to save, experts say these are the technologies driving the future.
The public is invited Thursday to an alternative fuel showcase to take a look at vehicles that use alternative fuel. It's free and open to the public until noon.