The cool thing is: the rebates apply on a sliding scale to conventional efficient cars too, not just hybrids.
The plan will aim to be revenue neutral by also levying an additional fee on the most inefficient vehicles (not trucks though).
Source:
http://www.cbc.ca/news/background/bu...vironment.html
Of course this only comes to pass if the current minority government's budget is passed in a parliamentary vote. Otherwise, it's election time.