Digital TV vs. Hybrid Cars

So by February 2009 all Americans will need to have digital TV/cable to receive programming. At this point most people have this so I don't think many of us will miss new episodes of Gossip Girl and Big Brother. It's interesting to me, though, that the government felt the need to make this a mandate. Maybe they should make hybrid cars a mandate? By 2010 automakers can only sell hybrid vehicles. It would help with all the fuels we use and if all were required to do it surely costs would go down, right? Just a thought...discuss amongst yourselves.