[discostu]

Maybe in your furnace or water heater. But do you really want a tank of flamable gas under preasure in your car? Think of all the accidents you've seen with a big puddle under the back of one car.

[brianl703]

Natural gas is only flammable within a certain concentration range...I believe it's something like 10% or 15% in air -- above or below that, it will not ignite (I looked this up a while back).

Natural gas is also lighter than air and won't puddle under the car like gasoline will.

The evening news pictures of houses blown to smithereens due to a natural gas leak are certainly dramatic, but that's a very rare occurence. I've certainly never known anyone that's happened to.