@RR get a load of this retard who trusts the ECU more than the driver who's paying for the gasoline to pick the correct gear
he probably looks at rigged EPA or advertised fuel economy numbers too, and believes them

my automatic tranny is fucking retarded at picking gears at highway speed in cruise control
>oh, what's this, a hill? we'd better downshift into 4th.
>hill over? now we're going downhill? fuck you, staying in 4th.
>another hill? TIME FOR THIRD AND 5000 RPM!
please, i am begging you, there are two more gears, use them.