While electric cars are taking over the streets, forage harvesters, combine harvesters and large tractors will still need internal combustion engines in the future. However, ideally they will no longer run on diesel, but will use a sustainable liquid fuel instead. Hydrotreated vegetable oil, or HVO, has similar properties to diesel, giving it one clear advantage: it can be used in pure form – known as HVO100 – or mixed with fossil diesel. This reduces the carbon footprint by up to 90 per cent in comparison with fossil diesel. Read on for seven facts about the three letters you won’t forget.