From Murata: "ADAS & Inertial Navigation"
Autonomous cars will be judged much more strictly than human drivers. Today cars are already operating independantly, whether it be through cruise control mode or even parking assist - cars need to be able to perform in less than perfect conditions for significant periods of time. For now and the future vehicle position must be immediately available to ensure the safety of the driver.
Inertial navigation could unlock the key to ensuring the vehicle position is understood even during satellite down time or complex road conditions