The wave of advanced vehicle connectivity technologies coming to vehicles embrace a number of interlinked elements, from seamless personal connectivity, to driver assistance systems (and autonomous vehicle control), intelligent transport systems, on-board telematics and the changing human machine interface itself inside the vehicle. In this month's management briefing we talk to OEMs and examine key aspects of the connectivity revolution coming down the line. In this instalment, Cat Dow runs the rule over GM's plans to launch its OnStar telematics service in Europe in October 2015.