Forget; I would tend to agree with you there, a clever picture.
Mmo on the 'classic' is 0.92 and I understand the airflow begins to go 'supersonic' over the 'hump' first at a little over 0.92 (sorry I cant find a published figure but believe it is around 0.95) What sort of wave that would create would be interesting to see.
I have been up to 0.94 on a test flight (to function the overspeed warning, before you all start jumping) and cannot say I noticed much different apart from the increased airflow noise.
Rgds
CL747