The single-man Lift + Push have caused some problems. There have been threads in PPRuNe of these moving a/c from A to B without a person in the 'top cab'. Which is where the money saving comes in. Unless the person in the 'lower cab' fails to leave enough distance and bumps his a/c into another a/c.
In Africa and other thirdl world countries, expect the classic Push only truck to be around for a VERY long time. Labour in those countries is cheap.
