Despite your sarcasm tags, if I'm not mistaken, they already pay higher registration fees. In most states, the fees scale according to the value of the car, and high-efficiency cars usually cost more.
Seems simpler to block it with a metallic shield on days you're not intending to gas up, then remove the shield on days you do. Long periods of time with no signal? Why, I don't drive much, it must not get a signal in my garage.
OK, this makes sense -- but as a FairPoint customer who got their mailing announcing this move, it was far from clear that this is what was meant. Reading it on my own, it seemed to me that they were saying that they were going to be intercepting MSN and Yahoo traffic.
Anyone can make an omelet with eggs. The trick is to make one with none.