Back of the napkin calculation is that burning 30 liters of unleaded gas gets you less emissions than 40 liters of Diesel; it is not only more fuel burned (with more CO2 as a result), but Diesel emissions are usually worse than gas.
The "living closer" is not an option, the place where my grandparents lived and my father was born cannot be moved. Me moving closer to the middle of nowhere (village in the mountains) is not really an option. Flying or driving there once a year is not a big deal, it is a short flight in a straight line versus a long, slow drive around mountains. The airstrip is a few hundred meters away.
The "living closer" is not an option, the place where my grandparents lived and my father was born cannot be moved. Me moving closer to the middle of nowhere (village in the mountains) is not really an option. Flying or driving there once a year is not a big deal, it is a short flight in a straight line versus a long, slow drive around mountains. The airstrip is a few hundred meters away.