I think the railroads have done a lot of the research on this for us. They switched over to diesel electric years ago. This allows them to design the diesel/generator system to run within an optimal throttle range and use direct drive electric motors for the motive power. If this system could be modified for automotive use remains to be seen. Cars go through a lot more throttle changes than a train. But it seems to make a lot more sense than what the car manufactures are offering now. Just my
