Compressed Natural Gas Cars

In Argentina natural gas was 60% cheaper than gasoline (NBC).

http://www.gnc.org.ar/NBC_news.pdf

Argentina has their winter in June. A cold spell has caused power outages and long lines at CNG "gas stations".

http://www.freerepublic.com/focus/f-news/1843026/posts

Argentina has a million natural gas cars on the road.

http://www.energytribune.com/articles.cfm?aid=414

Brazilians had more than a million natural gas cars.

Iran began to use natural gas cars.

Pakistan was using natural gas cars.

Egypt used natural gas cars.

Australia was switching to LPG cars.

Natural gas prices varied from location to location.


CNG pressure gauge

They have significant shortages but the left leaning government imposed price controls. It follows that the juice goes somewhere else.

The price controls are so bad that the service stations have imposed separate transaction fees to be able to remain in business.

FYI
Our family uses two CNG vehicles here in CA; It's a medium-term strategy that will either be smart or foolish--only time will tell. We should have a home fueling device in by summer's end.
Maybe a vanity plate that reads "REDQUEEN" would be in order? Or "PEAKCNG", or "PKOILHG", or...
I suspect that few other CNG-driving folks here expect NatGas to both increase in price and become scarce in "short" time; again, it's all about the timing.