At that time, there was also quite a good advance in the technology. I was in the UK as police Minister a year or so later, meeting the UK Minister, and they'd just introduced the saliva testing regime. I think from memory, because cost was an issue, it was about 20 quid—£20—a test, so it was relatively inexpensive. I raised the question of the correlation between the level of THC or cocaine, or whatever it was, and impairment, and he basically said, "We don't care." They did have a per se threshold, by the way, and if that was set too low or too high the risk that a person takes when they take illicit substances and they get behind the wheel of a car is theirs. I'm really pleased to note that I think we are approaching that regime at the same time as the science and the technology has advanced even further. So I went back and I asked officials. I asked Police, Transport about whether or not this was a regime whose time had come. The officials actually were still very cautious—and I have to defend the Hon Julie Anne Genter against the criticism that she had when she first became associate transport Minister because actually all Ministers can do is act on the advice of the officials and that was certainly the advice we had. So I am pleased that we are here doing this. The technology has advanced and, yes, there might be an argument that says we could have moved a little quicker but we are here and that's the right thing to do. 