4 ms·

It would go up with flying cars before it went down. Down is very expensive while up is free.

• zarro 7y ago
  You presume boring will always be prohibitively expensive.
  • wolco 7y ago
    Maintaining, cleaning, lighting, environmental controls. Plus the cost to dig up existing items and move them. We would save in road salt. Might be a good idea to start building stores/housing below and would serve as protection against climate change.
• freehunter 7y ago
  Up is very much not free. It costs a lot of energy to keep something suspended in mid-air. Airplanes that move hundreds of people are already under scrutiny for how much energy they use, there's absolutely no way we'd accept personal flying machines. Personal automobiles that can rest firmly on the ground are already criticized for their consumption even without having to lift off the earth. Down is much cheaper.
  • wolco 7y ago
    Not sure what the future holds but if we could just remove this gravity effect they could float. What if they were more like balloons? I think in the far future we will be able to transport and it will be the cleanest method of travel.