Mrs. Coleman (Messenger March 9) has a very important point about people sitting with idling engines.

It is not uncommon to see a car at the kerb, engine running, while the driver is either texting or phoning.

There is also the problem caused by the surge in traffic when schools start and finish.

It is no wonder we are producing a generation of obese children.

It might also be of note that now there is a concern about the air pollution caused by any form of internal combustion engine; this can be likened to "passive smoking".

As children are ferried around in cars virtually from birth, there should be concern about the polluted air that enters a car during a journey being inhaled by tiny lungs.

This could well be the cause of the increase of childhood allergies that has occurred over the past 40 years as the use of cars has proliferated.

David Olliver,