As per the Ganster Report Hoffa attended 10 sitdowns organized by the Detroit Mod in the Years prior to his disappearance. Many of these meeting were attended by Billy Giacalone. This validates him as someone Hoffa would trust enough to get in a car with (just as I always suspected). The 11th meeting was scheduled on July 30, 1975. Billy Giacalone likely picked him up that day and was probably one of the killers.