Jacqui Cheng goes with this headline “Mercedes Benz to integrate Apple’s Siri for hands-free commands”, which made me stop and be all like “no way, rad” then I read this in her post:
>According to the IBTimes, Drive Kit Plus integrates with Mercedes’ app called “Digital Drivestyle” that projects the iPhone’s screen onto the car’s in-car screen. At that point, drivers can use Siri to perform any command that Siri can already do, like make appointments, send messages, and perform Web lookups.

So it actually sounds more like Mercedes is integrating the iPhone as the central computer for the car, not that they are licensing Siri from Apple and thus having Siri integrated into the car.

There’s a big difference between the two.