The effects of the ongoing climate change are becoming increasingly hard to ignore. It is now considered proven that the CO2 released into the atmosphere by human activity is a major contributing factor. While the industry and energy sectors have been making great progress in reducing CO2 emissions for many years, in the traffic sector figures have actually increased in comparison with the reference year 1990. This explains why this sector is under intense pressure from the political side, as is evident from the ambitious specifications for the CO2 emissions of cars and lorries, for example.