it's because the neoliberal energy cartel doesn't let us fly auto gyros downtown
https://youtu.be/dkJOm1V77Xgvtol air transport requires the least amount of infrastructure.. and that's why the socialist authoritarian police state prison military industrial complex hates it so much and why they need to regulate nuclear energy into oblivion so we cant have synthetic fuels made with the fisher trope process
https://en.wikipedia.org/wiki/Fischer%E2%80%93Tropsch_processand then there's all the cartel bullshit on fossil fuels and its to the point where even algae based biofuels are taxed and regulated as if they were dino juice