Year round renewable energy?

[Steve]

As a qualified electrician, who later spent 18 years running my own electronic repairs company I feel confident I can get an alternator working. If every alternator in the world disappeared I can easily make my own, or make myself a permanent magnet dynamo instead, it's easy.

The drag the alternator puts on your power source is related to the amount of power you are taking from it - reduce the load and you reduce the drag.

I agree that for a short term event you'd be stupid to take your car apart to build a windmill, I was thinking of some longer scenario (and someone else's car), although not one where I am hiding and eating raw food.