On Fri, 2008-02-29 at 21:46 -0800, William "Chops" Westfield wrote:
> >> You really want an energy source other than auxiliary
> >> battery for the heat if engine heat is not available.
> 
> An interesting things I noticed about my Prius this winter is that it  
> pays a noticeable penalty in efficiency when it keeps that gas motor  
> running to heat the cabin.  More so than running the AC in the summer  
> (this is NorCal, so winters aren't THAT cold, and summers aren't THAT  
> hot...)

Not too surprising. FWIW the newest Toyota Matrix has an electric heater
in the vents so you don't have to wait for the petrol engine to warm up
to defrost your windscreen. A long time coming... :)

TTYL
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