An Oregon congressman says he wants to test having a government GPS unit in every car so a tax could be imposed on the miles driven. The proposal, H.R. 3311, which calls for a test project costing $150 million-plus, was introduced by Rep. Earl Blumenauer, D-Ore."Oregon has successfully tested a Vehicle Miles Traveled fee, and it is time to expand and test the VMT program across the country," he said in a statement on his website. "A VMT system can better assess fees based on use of our roads and bridges, as well as during times of peak congestion, than...