>> I read somewhere about the Prius though taking much more energy and thus CO2 t
>> build
Than what? It's a machine on the road similar to many other machines. The build cost in terms of CO2/unit should be similar.
>> and also that it's batteries contained a rare metal that is controversially mined in
>> Canada.
There are many large sources for these "rare metals". I don't know of any controversy (apart from the normal) over mining, a pointer would be of interest.
>> Also what people are missing is the huge headache and cost and pollution of used
>> and discarded batteries.
This is very unlikely to be the case, since they are valuable items for "recycling".
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