MANY years ago Marks & Spencers ran their fleet of HGVs on propane gas. It is a very clean fuel which would pay for itself in about one year.

If councils are serious about cutting pollution they should consider converting their vehicles.

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I once had a Citroen Picasso which only did about 30 miles to the gallon. However, after a gas conversion it did 60-70. During its MOT emissions test, it was so clean it barely registered. I saved roughly £1,000 plus per year.

A no brainer.

COLIN ELKINS