A variety of pressure sensors are used for different applications in a car, like power train or airbag systems.
Bosch has been active in the field of micro-electromechanical systems (MEMS) for more than 20 years, and is established as one of the pioneers of this technology. With more than 1000 MEMS patents, hundreds of engineers in this field, and more than 3 billion MEMS sensors shipped to date, Bosch is the global market leader for MEMS sensors.

This video in German: http://youtu.be/3MaQejkTHSQ