For one thing,
...sources say that the plan would not add more taxes to gasoline.
The trick (for me) will be that the Lib environmental plan does not wind up being entirely urban-centric; that there is stuff in it that allows Dion and Co. to pitch it to Tory leaning rural/suburban ridings. For instance, their LEM proposal (Location Efficient Mortgage) is great for people living near a half-decent public transit system. If you don't, you're not likely to be impressed.
Update: Conservative Gerry Nichols makes a good point: everyone is proposing a carbon tax these days, including (most likely) the federal conservatives.
Even Alberta has one, but they're don't call it that.
