Also on the fueleconomy.gov website is a really nice summary of where the enrgy that you put into a car actually goes… Typically, only 12.6% of the energy you put into the car actually goes to pushing the wheels…
http://www.fueleconomy.gov/feg/atv.shtml
I’m sure I will reference this in the future for something.

Also, there’s an article in EDN which I don’t know if anybody mentioned but it talks about the efforts to reduce power consumption in the car systems that don’t go directly to move the vehicle (such as reducing power used by headlights). It’s somewhat technical as it’s targeted to the engineers out there. It also references gm-volt.com a few months ago when we were discussing the issue of power consumption in the subsystems (apparently this author references gm-volt.com fairly frequently, too).
http://www.edn.com/article/CA6570998.html

Some points:
Tesla estimates cabin cooling in an EV would typically require 2kW. They estimate heating normally occurs with ICE waste heat equivalent to around 3kW. The Tesla fellow they were interviewing also pulled a back of the napkin estimate that an “extreme case” load for heating or cooling would consume 8% of the range… Headlights, 1.5% of the range.