Emissions reductions are achievable.  It I just what price for that achievement.

The $50/tonne Carbon Tax will cost ~ $1000/Canadian family (prorating Alberta government estimate for their Carbon Tax).  For the Carbon Tax to work, there has to be a more affordable alternative and currently there are few - and the few we have we are not chasing.

Natural gas would be a great transportation fuel for short haul truckers, buses, taxis etc.  It is significantly cheaper, but there is a cost for adding fueiling stations and retrofitting vehicles.  The bid advantage is less real pollution (SO2, CO, VOC).  but natural gas is a hydrocarbon, so it is evil.