There will undoubtedly be a constitutional challenge to any higher mandatory minimum penalties.
I think it would be fair to say that the bill introduces a higher mandatory minimum penalty for a fourth offence by someone reconvicted of impaired driving. It also introduces higher mandatory minimum penalties when you proceed on indictment. There are also a number of changes for the mandatory minimum penalties coming in for causing bodily harm and causing death offences, and they're extended beyond the impaired driving to dangerous driving and other offences. There are actually a large number of new mandatory minimum penalties in the bill.
We are, of course, aware of Supreme Court jurisprudence. The people who supported higher mandatory minimum penalties in the past considered that a gradation—going first, second, third, starting at a low level of $1,000 fine, and working towards a one-year minimum on a fourth offence—would be defensible.
I'm not going to say it would be upheld, but it would be defensible, and the same would be true if it were extended to dangerous driving and other offences. That was the reasoning behind that, which I'm sure you realize was the case in the previous government's Bill C-73.