Ken,
Here's an easily implemented and very efficient heating solution: motorcycle heated vests. Put them on under your winter coat, and plug it in -- it heats your torso directly.
The defroster is more of a challenge -- I'm hoping that we can use something like Ford (and others) did a while back, with a very thin coating of gold on the glass that electrically heats the glass directly. These were almost instantaneous if I recall correctly.
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