What bothers me about these proposals is that nobody ever follows the reasoning throught to the end.
Let's assume this testing finds a bunch of old clunkers that are then removed from service. That's nice, but what are the former owners of those cars going to do?
Buy another vehicle, perhaps?
The greenies never stop to think about the enormous energy & resources costs involved in producing a new vehicle. They just seem to have tunnel vision regarding tailpipe emissions; pollution from making the cars, or the total life-cycle energy cost never enters into the discussion.
GRRRRRRRRRRRRR!
