Video: Oklahoma City group trying to turn USPS on to natural gas vehicles

An idea launched on the Internet is becoming closer to reality, thanks to the timely intervention of a former U.S. Air Force pilot.

Oilman Ron Mercer and adman Bob Hammack hatched their plan almost two years ago: Save the U.S. Postal Service from going broke by switching from gasoline to cheaper natural gas.

Read more: Oklahoma City group trying to turn U.S. Postal Service on to natural gas | News OK.