How to achieve shorter taxiing time by elongating the airfield What about doubling the length of airfields in order to shorten the time it takes for a plane to roll on the ground after landing and before takeoff. The plane could take off from the middle of the air-lane and when it lands it can turn off in the middle, in order to minimise the driving time to and from the terminal. Why don't we see this and what does it take to achieve it?
I had expected a calculation as an answer to this question. Taxiing takes 23 minutes. In Sweden savings for private travel is evaluated to €4 per hour and $20 for business.
The cost is that it would required a runway twice as long.

Airports already take up enormous amounts of land. Designers try to build airports near major centers, so taking up twice as much valuable land for longer runways near a major population center is a huge cost.

The longer runways also need to be cleaned, maintained, and snow-plowed.

That is a lot of cost and difficulty just to reduce taxi-time by a couple minutes.   After one has taken a 2 hour cross-country flight, 5 minutes of taxi-time is not a point of concern.