I think it has nothing to do with gas prices and liability. The GB they realize that they will lose even more members or scare off interested ones if they continue with the schedule and demand upon the witnesses.Every witness that i know has told me the stress isway too much for the friends in trying to keep up with everything.
Also the Book study has always been along with the watchtower one of the most boring meeting they have since they continue the study the same thing over and over again even when they come up with a new publication,it's repeated garbage even when they study a new publication.
Next, it will be the school that might be canceled or altered since it's a waste of time