Are you really taking these as promises?
Link 1: "will probably"
Link 2: "I think"
Link 3: "He said he expected…" and "It is not possible to know exactly when each element of the functionality described above will be available"
Link 4: "He predicts"
Link 5: "He thinks"
Link 6: "I think"
And in some of these he's not talking about production cars, but is talking about prototype vehicles in Tesla's development fleet.