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A new runway could be coming to an airport near you... in 2050pic.twitter.com/ZrF9nZYJ65
This makes total sense if you've never piloted an airplane or been in an airplane or have no understanding of centrifugal force.
What’s the issue Geoffrey?
Safety is the issue.
I guess that's why there's a lateral inclination.
That's what superelevation is for 
Do you mean inertia? Seems like it could work. Radius would have to be much bigger than the simulation though.
I was just going to say the same. This would only work if the circle is so big that it's locally effectively straight. This is a real brain fart.
Airports have very large footprints
Centrifugal force could be handled with superelevation. Where it comes off the rails, quite honestly, is with air traffic control, which would somehow have to line planes up in spirals instead of lines. What a nightmare.
At a take-off / landing speed of 180mph with a circle radius of 1.5mi, the centripetal acceleration would be about 8.9 ft/sec^2 (between 1/4 and 1/3 g): a = v^2 / r. 180mph is a 747. This runway is quite long, at >9miles, but it is supposed to replace several runways.
The good idea faerie has run amok. Its difficult enough landing on straight runways in bad weather. Now and in constantly changing heading, crosswinds, and a laterally sloped runway. No thanks.
...Now add in...
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