Furthermore the notion that you'd be sharing core processing between safety-critical car functionality with infotainment functionality is downright scary. These

Furthermore the notion that you'd be sharing core processing between safety-critical car functionality with infotainment functionality is downright scary. These should always be (are they?) discrete systems. I can cause my BMW's i-drive (CIC-HIGH NBT F20 2013) to completely crash if I perform a specific action. After fifteen seconds the system detects the freeze and reboots. The way the reboot occurs strongly suggests the reboot is performed by a hardware level supervisor. But the rest of the car continues to function.