The SAI concept looks a lot like some of the Boeing Sonic Cruiser concepts from a few years back, like this one: http://i177.photobucket.com/albums/w238/Christo

The SAI concept looks a lot like some of the Boeing Sonic Cruiser concepts from a few years back, like this one: http://i177.photobucket.com/albums/w238/Christopher_Cvel/11459402906rM971.jpg http://i177.photobucket.com/albums/w238/Christopher_Cvel/114... The SAI and early cruiser concepts both have winglets, but the later cruiser concepts have raked wingtips, like the 767-400: http://www.boeing.com/commercial/aeromagazine/aero_17/wingtip_devices.html http://www.boeing.com/commercial/aeromagazine/aero_17/wingti... I'd love to see how a floor-plan like this works in practice: http://www.aviationexplorer.com/pics/future_airliners6.jpg http://www.aviationexplorer.com/pics/future_airliners6.jpg Seems like the airlines and airport authorities would need to come-up with some better queueing/loading processes.