Tracking devices to be put in cars?

Transportation officials in California have devised a new tax plan for motorists. The plan intends to implant tracking devices in cars and record the mileage driven. From this data, motorists will be taxed based on the amount of miles they drive. This idea is also found in Oregon and even in Germany. With cars being more fuel efficient, less money from the gas tax is given to the department of transportation for public works projects. This new idea is only in the planning stages, but is being met with negative feedback. Many motorists are concerned about privacy issues and ways of policing the plan. The good news is that this plan may take many years to have all the kinks worked out, if it even gets that far.