&gt; save money on gas.

*And* to re-certify the aircraft under the same certification saving airlines with Boeing 737 fleets tons of money on training and scheduling. This was a major, major selling point for the 737M. I have a feeling that failure to mention the MCAS system, or at least understate its command of the control surface, was intentional to not draw attention to their self certification and how similar of a plane were pilots being put in.