The reality now with the evidence we have is that under the current approach a significant number of people who are impaired behind the wheel are not being detected by police. We have, as you've said, a very easily available scientific method of determining that, with little intrusion in a regulated environment where they are exercising a privilege.
As Mr. Yost is indicating, our hope is that there's a whole variety of different techniques and tools used by police to try to enhance the deterrents. Some of it may be just as you experienced in Tasmania, but there will be a variety of other circumstances, given the challenges associated with the current situation and notwithstanding the successes.
I think, in looking at drug-impaired and alcohol-impaired driving, that wider perspective is hugely important and, as Ms. Morency said, with the combination of education.... I grew up in a generation when my parents had very different views about it from those of my children. That's a huge success for Canada, but we're looking at what the next step would be to try to improve and reduce the carnage and the human toll that exists on the road now.