The suitablity of LPG'S for the road

kia From the site www.evmart.co.uk/images/lpg-cars.jpeg

LPG is suitable for the road as many of the new eco cars run on liquefied petrolium gas. It is mostly made up of short chained hydrocarbons. Its suitablity for the road is good as you can store it under high pressure as it is denser than most gases. It is generally safe to use as it is as flamable as other gases so it is no more dangerous than any other fuel. It is also suitable for the road as existing engines in cars can  be modified so it can be used at the moment. The only minor setback with LPG is that it is not as convinient as petrol but it is denser than methane and hydrogen  

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