I have a question regarding the kg*km formula for calculating the transportation phase of LCA. I want to calculate the transportation of 15 kg of a product over 20 km distance by a 3.5-7.5 lorry. However, intuitively it seems to me that emissions from a transportation of 15 kg of cargo over 20 km distance (300 kg*km) should be less compare to transportation of 1 kg of cargo over 300 km distance (same 300 kg*km)? Where am I wrong?