Does not seem to matter if I am sitting at idle in my drive way, or moving at a steady clip down the highway. This evening it stalled at a stop sign. I restarted and went straight to my mechanic. It tried to stall at 35 MPH on the way there but I was able to keep it going.
One thing I noticed with the hood raised that if I rev the engine I hear a lot of air suction going on. My last 750iL with the 12 cylinder never made a sound regardless of idle or going down the highway.
Thanks to everyone that is offering an opinion as to what the cause may be. We are a united group I have to say.