Old news
This has been on BMWs for ages... http://www.euroncap.com/rewards/bmw_assist_advanced_ecall.aspx
It has a SIM in the car and dials their call centre upon a crash, airbags, being upside down etc. Then they dial into you via that SIM to talk with the occupants and then escalate to 999.
You're already carrying a tracking device and can be / are tracked everywhere, so get over it.