NaturalDrive: Retrofitting conventional cars into natural gas vehicles.

The Honda Civic CNG vehicle at the LA Auto Show

NaturalDrive has received EPA certification for its CNG retrofit of the 2008 Chevy Impala.

According to GreenCarCongress, "NaturalDrive’s retrofit package includes a compressed natural gas sequential digital fuel injection system and 10.4 gasoline gallon equivalent storage in Type 3 composite fuel cylinders. An additional optional cylinder provides a total of 13.0 gge storage, for a maximum highway range of more than 375 miles @ 3,600 psi. The 3.5L engine delivers 212 hp and 190 lb-ft of torque."

Other retrofits are on the way.

Natural gas is much cleaner than oil and there is enough natural gas to replace foreign oil for many decades. Unfortunately, however, there are some questions about CNG drilling and possible water pollution.

If those issues could be resolved, such retrofits could help America quickly end foreign oil dependency while either creating new jobs, or at least sustaining current automaker jobs.