It is said to be a more environmentally friendly and a cheaper way to drive.

A fleet of vehicles that use hydrogen for fuel pulled into Augusta Sunday for the Hydrogen Road Tour.

There is no exhaust and no greenhouse gas emitted from the cars. As a matter of fact, the only thing they release is water. According to experts hydrogen cars are front runners in the race to gasoline independence.

Bob Cogel showed up to the Road Tour to check out another alternative to fuel. He already knows about one.

"I run my car on waste vegetable oil," Cogel said.

He gets the vegetable oil for free and it only costs about 15 cents a gallon to filter. Still he was interested in what the Road Tour had to offer.

“It's the most abundant element in the universe we figured there must be something we can do with it,” Bruce Burney, of the Center for Transportation and Environment, said.

There were two types of cars that run off of hydrogen fuel at the road show.

“A BMW that burns hydrogen just like a gas car burns gas and fuel cell cars. Fuel cell cars take the hydrogen and convert it into electricity and use that electricity to power an electric motor,” Chris White, of California Fuel Cell Partnership, said.

Experts say many people confuse using hydrogen fuel for just putting water in your gas tank. Not quite, White explained.

“What we do is take the car to a hydrogen station and that station may have made the hydrogen from water or that station may have made hydrogen from natural gas or what we call biomass such as a rotting peach pit,” she said.

But Cogel could not help but wonder where to find these hydrogen stations.

“The question is where to get the fuel. I don't think there are many hydrogen stations yet,” he said.

Cogel is right. According to White the lack of stations is at the heart of some of hydrogen's biggest obstacles.

“There are four things we're working on, durability, range, reliability and having an infrastructure. Stations that are accessible, convenient and easy to use,” White said.

Despite the obstacles White says hydrogen fuel will be more cost effective at about $3 to $4 a gallon. That’s a price that may sound the same as gasoline.

“When you consider in a fuel cell car you're getting two to three times the mileage you’re paying less per mile,” White said.

But don't go to any Augusta car lot looking for one of these cars just yet.

“The automakers predict right around 2015,” White said.

The tours next stop is in Madison, Ga., where the fleet of hydrogen cars will refuel at a mobile hydrogen station. Then the tour will move on to Atlanta.

Experts say the tour is a way to get the word out about hydrogen cars, before they hit the road.