That's a very important point. We are aspiring to the highest attainable environmental standards in terms of our tailpipe emission standards.
Sometimes an assumption is made, on the part of people who have not worked through the detail, that the California standards necessarily yield higher environmental benefits when translated to Canada. Shortly after I became the minister, I asked to see the analysis on this fact. While there's certainly opportunity for debate about this, what I've seen technically tells me that because the fleet mix is different—we have a different percentage of trucks versus cars in Canada compared to California—if you apply the California standards in Canada, you don't get better environmental outcomes. In certain circumstances, you could get worse environmental outcomes.
The reason is that the California vehicle mix is, as I recall, 70% cars and 30% trucks. Trucks are essentially a free rider, if you will, under the California standard. When you come to Canada, where we drive a larger percentage of trucks--namely, 60%--you suddenly introduce a variable that the California standard doesn't yield higher outcomes. You have to look quite specifically at each province and the percentage mix.