This brings me back to Mr. Bigras' question.
We have to be careful: some measures have multiple benefits. For example, improving access to transit has a very significant impact on the cost of infrastructure within a municipality, on quality of life, access to transportation for low-income earners, workers and so on. So, we cannot assess that kind of measure solely by calculating greenhouse gas emissions, although that is potentially one of the spin-offs.
The other aspect I want to mention, to come back to Mr. Bigras' question, is that the investments and regulations you make today will lead to significant reductions in 5 years, 10 years, 20 years. That is why we are talking about an overall energy efficiency plan, an overall transportation plan. We have to consider what you do in terms of short-term, intermediate-term and long-term targets. That is how all measures need to be considered. The initiative you mentioned is interesting if it is part of an overall transportation plan, but, when taken alone, it is not easy to calculate the reduction in greenhouse gas emissions.