We're aware of and in fact Vancouver police took part in a trial of screening devices at roadside. We're not sure exactly how that's going to work. In application, one of the devices requires the tongue to be scraped, so do we have a compliant individual at the roadside...?
Again, to make the determination as to whether someone is impaired, the drug recognition expert program, as was mentioned previously, is the principal way to do that. Most agencies, I would speculate, will not have enough members who are trained in that particular skill to cope with what we anticipate to be a rise in impaired driving due to marijuana. That's the dilemma.