A 12 Kilometre Walk For Nothing

My thoughts turned to doing a bit of exercise today and at the same time not just waste the energy but make use of it. The plan was to walk 6 kilometres to a petrol station to buy a 10 kg bag of charcoal instead of using the car. This would save money on fuel and get me a bit of exercise of course. A round trip of 12 km half involving a bit of weightlifting. The walk was brisk and I arrived at the petrol station after about an hour. On asking for the charcoal I was told that they had sold out this morning due to the fine weather we are having today! So it was a 6 km walk back empty-handed.