Pastor, We're in agreement. There are limits on the right to drive, based on safety considerations. We are getting away from why I posted that, though. You said that driving is a privilege, not a right, as if that is a catch-all that means it can be regulated for any reason -- including the social goal that began this thread; an effort to try to get people use less gasoline. And I was pointing out that we don't regulate things like this unless it is to prevent people from impinging on other's rights -- in this case, for safety considerations. This kind of regulation would actually be the antithesis of the idea of "rights" as we know them, because rather than leaving people alone to pursue liberty and happiness as THEY see it, we'd actually be impinging on some people's liberty by limiting something the might choose to do that isn't violating anyone else's rights.