3 ms·

Airlines dont pollute. Their customers do.

• usrusr 7y ago
  Depends. I believe that regional feeder connections, where fuel cost is a lower fraction of total expenses than for longer distances would still have a lot of unexplored fuel economy improvement opportunities left. Even speed isn't terribly important there. Unfortunately, due to bigger picture economic incentives, feeder connections would likely be the last to suffer taxation/loss of subsidies.