Politcal correctness aside there is no question that adding an additional power system to a hydrocarbon combustion plant also adds additional waste.
Pound for pound it takes more fuel to move a hybrid per foot poound of travel than it does to move a vehicle with a signle stage power system.
With a Hybrid one is also adding the waste of generation which includes the additional friction losses of driving a generator as well as the standard generator efficiencies encountated as an industry standard. These are generally no better than 80 percent adding rougnly an additional 20% loss to a process that is aleready terribly inefficient.
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