Natural Gas Transportation 2020 CA NGV Fuel Use 164.8 Million DGE Total In 2020, 92% of all on-road fuel used in natural gas vehicles in California was RNG Lowered GHG emissions equivalent to 4,593,806,532 miles driven by the average passenger car That’s equal to 7,002,753 trips along the Pacific Coast Highway (SR1) or the energy use of ...