The only report I've read about that side issue assumed that producing an ICE/petrol engine and transmission caused no CO₂ emission, or the authors just forgot.
Do you know anything about that? What is the CO₂ cost of producing a typical battery+electric engine compared to that of producing a typical transmission, ICE engine and the minor ICE-related parts that electric cars don't need?
Do you know anything about that? What is the CO₂ cost of producing a typical battery+electric engine compared to that of producing a typical transmission, ICE engine and the minor ICE-related parts that electric cars don't need?