[nknezek]

There are 57.5 million square miles of land on Earth, including mountains, deserts, rainforests, national parks, tundra, and Antarctica. There are currently 7.4 billion people. This works out to ~4.9 acres per person of land of any type.

World arable land is ~26.2 million square miles, or about 2.2 acres per person. At 11 billion people (projection world population peak by ~2100, you get about 1.5 acres of arable land per person. There is literally, physically not enough space on Earth to put your plane into action.

I like nature, but I think you underestimate the subsidies given for rural development and infrastructure and just how unsustainable our development style in the US is.