The tax credits would allow GPS in cars to track drivers ' usage . Transportation Secretary LaHood called it an idea ` ` we should look at '' The Department says Obama will not pursue the idea . Gas taxes encourage people to use less gas . ... Oregon carried out a pilot study and deemed it ` ` successful ''
The tax credits would allow GPS in cars to track drivers ' usage . Transportation Secretary LaHood called it an idea ` ` we should look at '' The Department says Obama will not pursue the idea . Oregon carried out a pilot study and deemed it ` ` successful ''