ATLANTA -- MARTA has them, UPS has them and Georgia Tech has them -- but if you want a natural gas vehicle, you'll have to wait in line. T. Boone Pickens said it's one way to help wean us off foreign oil, but how long will it take until we get there? Consumer Advisor Clark Howard has some answers.

Atlanta Gas Light has a car letting you know it is a natural gas vehicle and it shows what they want to see all over metro Atlanta -- natural gas vehicles. Pickens said it's the bridge that will end our dependence on foreign oil, but so far, there's not much traffic on that bridge.

"I'm one of the few people in Georgia that actually owns a natural gas vehicle, but I've just sold mine on Ebay. Why? Because filling it up was too much of a hassle," said Clark.

"Right now the infrastructure in the Atlanta metro area doesn't exist," said Donna Peeples with AGL Resources.

"Here's the problem -- I can go 150 miles before I need to fill up my car. But when I bought it, there was only one natural gas filling station in the entire state open to the public. That means, I was stuck on a 100-mile leash. No road trips for this baby," said Clark.

"It's a chicken and the egg question that we have. There has to be a need generated so the infrastructure can be justifiably built," said Peeples.

Georgia isn't the only state where it's hard to find natural gas filling stations open to the public. According to the Department of Energy, there are only 339 public natural gas fueling stations in the country. Fifteen states don't have any.

So what's the answer?

Right now, the answer is a home fueling device, according to Clark. Consumers can actually pull into their garage, connect, and refuel overnight. The device is called a 'Phill.' It's installed in your house and you fill up overnight. So far, only one person in metro Atlanta has ordered a Phill. There's no rush to get it in, though, because he is also having to wait to get a natural gas vehicle. It's on order and won't get here until December.

"I do believe that we're going to have a variety of alternatives, electric cars, plug-in cars and new versions of vehicles no one's even though of yet," said Clark. "We're going to get our arms around this energy thing, it's just going to take awhile and a few false starts."

Just in the last few days, another public natural gas filling station opened near the airport. Channel 2 also learned installers will put the first Phill home fueling station in the state in metro Atlanta in a couple weeks. The buyer is still waiting for his natural gas car to be delivered -- the Honda CNG is more expensive than a regular Honda Civic, but with the tax credits the retail price is about the same.