Thanks for the links. The station in my city has CNG at 1.80$ GGE

So from what i've read, CNG is what is the most common option used on vehicles. And CNG is a fuel that doesn't go through too much refinement where LPG is a mixture of gases mainly obtained from fossil fuels.
There is a 15% drop in power in CNG, LPG has a slightly better score at a 10% drop in power.

Anyone has any idea of the availability of CNG vs LPG gas stations in california ?


I see distributors selling the kits offer both options.
Is it a matter of availability of Gas Stations only ?

EDIT: Here's a comparison