Although 10 years old, the cloud work on this shot is still formidable.
This is the way it was shown on the big screen, through the 2003 feature film called "A Touch of Spice".
The airplane used is a hybrid model between an Airbus 320 and a Boeing 737 and was featured on the cover of the issue 35 Keyframe magazine. Rendered using LightWave and Maya. Music is from the soundtrack of that movie.
You can see some early cloud tests from this shot here: vimeo.com/glezakos/clouds