I have spoken to physics guys about the electric motor argument and they have stated that in the UK we use around 2 mbpd of oil and a barrel contains around 42 gallons and hence at 40 KWh per gallon thats 1680 KWh per barrel x 2 million = 3.3 billion KWh per day of additional electricity or if we do as you say and lets say we need only 25 % of that due to the efficiency of the electric motor that is around 750 million KWh a day or 750 GWh a day! (realclimate.org)
Conventional production is seen dropping slightly from 2010's 0.9 million barrels per day to 0.7 mbpd in 2010. (greencarcongress.com)
Shell states that tar sands are less damaging that coal: Well since when was coal and oil used to the same ends unless they are talking about widespread adaption of CTL technology which could happen in some countries with large scale coal rserves I guess but even I doubt that CTL projects will scale to 3 — 5 mbpd which is the projected output of Albertas oil sands come 2030. (realclimate.org)