Well the fact of the Matter actually is Sonja that you where Beta Testing the new device that will be available shortly.
It was deliberately designed to look like a
Galaxy Nexus but in actual fact is specifically designed for several models of European Cars as an Integrated Portable Device to work through the Car's sound system for calls and to prevent Drunk Driving.
It refuses to allow anyone access to the car let alone place them in a position to actually drive it. Oh and BTW in the Prototype you can Manually Unlock it but in the Production version there is no Override so you are locked out of your car till the device thinks you are fit to drive at least 1 week latter.
You don't have Keys any longer it's this Phone that you use to access your Car and make it drivable. New Road Safety Device to prevent Drunks from driving and killing others who get in their way, and also prevent Upsetting people by Texting while under the Influence.

OH and best not tell anyone about this as it's a Secret of the German Auto Makers who are in the process of making the Smartest Cars on the Planet. This is just one of the New Road Safety Developments that we'll see integrated over the 2012 year.

Col