Contrails? Like the genesis of clouds caused by condensed water and engine heat at high altitude?


Or, wingtip vortices? The little vapor trails wingtips make in dense, humid air during high G maneuvers.

Wouldn't contrails be a whole new coading nightmare? Having to put them where the plane was and leave them for an indeterminate amount of time? And everything would get so cloudy.
On the other hand, who flys that high anyway?
wrongway