I have to say, after visiting Portland back in April, the bicyclists in the city are MUCH better behaved than bicyclists in Utah. They stopped for stop signs, consistently; they wore helmets, reflective clothing, and flashers; they respected the cars, and the dedicated bike lanes made it a lot easier for the cars to get around them.
All that being said, I found driving in the city to be somewhat scary. A lot of single lane, curvy roads, and I felt cramped in my lane.
As for the tax, they've been proposing this since at least back in April, because I read about it while I was there. Rental cars already had the GPS installed, so they could bill you extra if you left the approved area (Washington, Oregon).
Their justification for the GPS was so that they could make sure that the fees were collected only for the cars which drove on their roads. As that was their best selling point, I'm not surprised the plan hasn't moved forward much.
--Jimmy