Lot’s more to it than just pumping as you say. I drive a CNG powered vehicle and have for years. None of the Vehicle manufacturers build CNG systems currently and the cost to retrofit one like the Silverado I drive is over 20K. Then you have to maintain it. Expensive. The cost to maintain the compressor stations is expensive. The main drawback for the mass population is the infrastructure. You would need these compressors located everywhere with Adequate storage capacity. Again not cheap. It’s really not feasible now with the cost of gas as low as it is today.
