Now, fast forward to 2013 and 2014, and I was the Associate Minister of Transport with responsibility for road safety. In that period, there was a tremendous tragedy on the State Highway 1 near Foxton, where a truck driver, not noticing roadworks had stopped a number of cars up ahead, rammed into the back of a line of cars. Those cars concertinaed and one of them burst into flames, killing a mother and son. It was a tragedy. And the driver was taken to Palmerston North Hospital where a blood test was taken that showed THC was in his system but, because he had not embarked on the roadside impairment test that we had passed the bill for, he was not able to be charged with drug-driving causing death. Indeed, he was being charged with careless driving causing death and, understandably, that caused a tremendous amount of anger. I had to go on, I think it was, the Sunday show profiling that and defend the process, which was pretty hard, I have to say. A very probing interviewer said to me, "Look, it's really clear. He had THC in his system. That probably caused the accident." And all I could say was, "Yes, but probably wasn't the burden of proof."