With natural gas being so cheap, there’s a push from producers to showcase how compressed natural gas can be used in cars. The issues involve things like trunk space since the fuel requires much more space, and also fueling stations. Trucking companies are setting up fueling stations for well-defined routes, but for someone who wants to buy a car we’re a very long way off.
With all the options surrounding alternative fuel vehicles, it seems like these are a long shot in the short term.