<<< Powerful applications are expected on the roads; the Galileo network would allow a vehicle's exact movements to be tracked, presenting new possibilities for road-user charging and tolling.
The precision and availability of the Galileo signal would facilitate the application of charges according to the distance travelled by a vehicle, along with other parameters. >>>
http://news.bbc.co.uk/2/hi/science/nature/4552132.stm
Wojtek