A blue butterfly flutters out of the green thicket, pauses for a few seconds before disappearing in the trees. ”Whenever one of these butterflies flies, then the soul of a dead one flies,” our guide Kistupa Peas, an Achuar Indian, deep in the jungle of Equador tells us. The next town is 12 days away by foot. There is only pristine rainforest where the Kapawi river flows into the Pastaza, one of the arteries leading to the Amazon.

Red Bull, the sugary drink, was launched in Britain a decade ago. At that time no one had heard of an ”energy drink” and most people assumed Red Bull was a brand of Austrian lager. What has happened since has written a new chapter in drinks and marketing history and might be about to give F1 a much-needed image boost.

Bernie Ecclestone’s high court defeat this month left most of the formula one (F1) community feeling like passengers on an airliner that had just passed through a particularly bruising spell of clear-air turbulence. It all seemed very worrying and uncomfortable, but ultimately you knew you could not do very much more than grin and bear it.