If we all suddenly switched to this kind of fuel the economy itself would collapse.
Alot of currency (including the dollar) is now based on oil rather then gold.
This would cause chaos not only all over the arab states (seeing as oil is their only export) but the US, here and most of the Eu (mainly russia)

It's in the best interest of the energy companies to keep a lid on this sort of thing until they are ready to ween onto it.
It's a messed up system, despite what the govenments say its all about money and being "carbon neutral" is nothing but an excuse to make more of it.