The potential of LPG (propane gas) for petrol engine conversions and hybrid cars
Liquefied Petroleum Gas (LPG) is the generic name for mixtures of hydrocarbons (mainly propane and butane). LPG is synthesised from petroleum or natural gas. So it comes from a non-renewable fossil fuel source.
However, it burns cleanly without soot and with hardly any sulphur emissions. So it's less toxic than many other fuels and is responsible for less smog producing pollutants.
While it is cleaner than petrol it's slightly less efficient as a fuel and it is harder to find at petrol stations which makes it a little inconvenient to use. As an invisible and highly flammable gas, it also needs careful storage.
There are LPG Conversion Systems that enable most petrol engine cars to be modified to run on the gas.
And with our Hybrid Synergy Drive® technology, LPG can also be used in conjunction with an electric motor to create an ultra low emission power source.
Currently, LPG represents a cleaner fuel solution than petrol or diesel although, being less efficient, it does have drawbacks. And of course, synthesising the gas puts pressure on non-renewable resources. So while it offers a reasonable short term solution, it is likely that more sustainable fuel technologies will prevail in the long term.
-Toyota Aussie
http://www.toyota.com.au/hybrid-synergy-drive/alternative-fuels/lpg-cars
මට නම් මේවා පේන්නේ අර මුල් යුගයේ ගඩොල්කැට මොබයිල් ෆෝන් වගේ. 
not about converting hybrids to LPG...
ඕකෙ බැටරියයි මෝටරෙයි විතරයි නේද තියෙන්නේ?
