After how boring my Uber ride was for E3 with it's deal with Call of Duty Advanced Warfare, I'm not sure how much I can recommend getting into Optimus Prime. That sounds kind of dirty. If you're in LA June 19th between 1pm and 7pm you have a chance for a free ride in the Optimus Prime Truck for a fifteen minute experience. They're saying only one of these will be in town, so you might have to go on a quest to find it. I'd rather ride Grimlock.