I am having the same problem as vavalgia. Vehicle bar never seems to work. I have to turnoff bartender and reload the ui in order to do most of the events/quests etc that require those types of actions. While I run several other add-ons just turning off the bartender and reloading always corrects the problem so I don't think it is another add-on that is causing the problem. Is there another setting in bartender concerning this bar (perhaps a new setting) that I may have set incorrectly?