Dennis said:
In the US a proprotion of biodiesel (also known as RME) is produced from used cooking oil - a handy way of disposing of it.
Yes I have heard of that and think it's very good idea. But of course with all good ideas authority won't take the trouble to implement a used cooking oil collection system by councils or whoever. Think of the thousands of gallons that go down drains and into bins each week?
I would like to see all bio-diesel reserved for public transport like buses and without any tax on it so that it makes it viable for them. Bus'es/trucks are bigger polluters than diesel cars so selling to private motorists is a bit silly. Let them use petrol and ordinary diesel and pay the revenue. After all there's millions of them to pay it why should bus passengers subsidise them?
Another thing is that road tax and insurance should be lumped in with the price you pay at the pump. That way ALL motorists pay their fair share and it will possibly mean a reduction in insurance premiums of those drivers that DO pay. Driving age should be raised to 18 also. [ which is, I hear, in the pipeline along with raising the age limit for tobacco purchase]