I've often thought that, thinking of the predicted future food shortages, we should be making use of all the good grass etc that's growing along the verges. Of course, pollution might be a problem; but with fuel getting shorter in supply, and sooner or later people having to use less of it, that problem will diminish, too. After all, that's what smallholders in ages past did: they took their house cow, goat or sheep grazing... My father used to tell me those stories; his granny had a ewe, and it was one of his regular chores to take her out grazing. He was the envy of the neighbourhood kids - because they mostly had goats to look after - and as you all know, goats have more of a mind of their own!