A fair point...though the price of vehicle fuel ( the vast majority is taxation) has dropped to the extent that millions of 'extra' miles are being driven....so perhaps punitive taxation can modify behaviours? As we all know the drive to a higher carb/ sugar enriched diet was certainly not helped by the crusade to demonise fats, animal in the main. In addition, due to socioeconomic reasons, where convenience foods took a foothold in our day to day diets. What frustrates me is that many of us Type 2 diabetics now know this and try to take steps to address the issue- not unlike fitting a burglar alarm the day after the 50" flat screen has disappeared at 3am, though.