I'm surprised more of you don't have s sense of history... This same thing happend in the 70s. Propane conversions were real big then, how popular are they now? Everything has a trade off. Fuel is the most sensitive commodity to price. once it is pumped out of the ground it is difficult and expensive to store. You don't like high fuel, don't drive you 1 ton to work.

Prices did come down from their high 2 years ago when more people carpooled & commuted w/ better efficiency cars.
I want to leave you with a couple of thoughts
I have an 84 4wd Subaru wagon that gets 30mpg
I have customers in BC that have 4wd 4door Toyota Hilux (Tacoma) diesel that get 35mpg lifted.
In Europe they make a diesel for my wife's ford focus that gets 55mpg
The STATE is going to start taxing ELETRIC cars because they pay enough tax
There is a reason they call oil BLACK GOLD!