IPhone :: Add Siri As A Contact?

I drive a BMW with iDrive. This supports the iPhone over Bluetooth which is a great feature. However I can only make phone calls from my cars controls. With the advent of Siri, I was really hoping to be able to take advantage of "her" other features over Bluetooth.

Problem: I cannot initiate Siri from my cars phone controls. I have to physically have my iPhone in hand to initialize Siri.

E.g. I have my iPhone in my pocket and I feel the buzz that I got a text. I have to struggle to get my phone out of my pocket and read the text while I am driving, which is not exactly safe or intuitive.

Solution: the ability to add Siri as a contact. All I would need to do is bring up my contacts and "call" Siri. I would then say my command, "read my texts" and I would hear the last message over my cars speakers. The same would apply to creating texts, asking for the nearest gas station, calling people through Siri (who's voice recognition is better than BMW's).