Mario, that's a good question. I'm not an expert, but I believe if the same conditions are met - load/speed/acceleration, a Ferrari (or any car) with an ICE will have worst fuel consumptions and emissions than a Ferrari with equivalent ICE plus electric motor/s (hybrid). To accomplish a certain work, the first one will rely solely on the ICE (engine will have more load to carry), needing more fuel and revs to match the performance of the hybrid. This equals to more consumption (more anergy is needed), will dissipate more heat and emit more gases to the atmosphere. The ICE on the hybrid car will need less work to accomplish, since part is being done by the electric motors. Of course this discussion about pros/cons about the hybrid/electric solutions isn't so simple. We have yet to understand the effects of additional electricity generation to match the demand, grid overload, battery life/substitution/recycling, etc.. Unfortunately, most of the news about electric cars are based on simplistic soundbites (managed by some), so I guess we will understand the trade-offs only down the road once there is no turning back. Plus nobody is thinking about asset depreciation (most current petrol cars will depreciate extremely quickly) and recycling of current vehicles.