Not sure posting personal contact info for individual executives is the right thing to do here. They have team members who listen to the market through consumer research and surveys, customer support channels, dealership networks and much more.
BMW North America has an excellent Customer Relations team with contact information here:
http://www.bmwusa.com/Standard/Content/ContactUs/
I'd suggest using it, where your voice will be heard in aggregate with other people asking for the same option, rather than individually whining to the BMW NA CEO on a holiday weekend. He's a person just like you and me with better things to do today.