When it shows in Detroit you will likely be allowed to have a seat. Here are pictures from the 2008 E92M3 launch. That's my ugly mug falling in love with the car. I will say that the M5/6 also were open to the public when they were showing production cars at NAIAS. I would assume you can get into the car. If you can either go black tie, during the work hours during the week, or figure a way into a press event. During peak hours it gets a little unruly with riff-raff.
