Here is the link Neil to an electric hydraulic hybrid. It's been posted many times on this forum, almost impossible to believe you have never seen it before.
Electric Hydrid
Enemy my Patent is US#7677208
http://www.freepatentsonline.com/7677208.html
I also have an 82 page research document done by Va Tech school of engineering that was focused on my design with their efficiency calculations. In wheel drives at lower than 1000 RPM maintain drive efficiencies above 93% with the lowest at the highest speeds. The bent axis pumps that the EPA used were spinning at prop shaft speeds where their efficiency dropped off to 75% because they were running the same speed as the prop shaft.
Also Neil this IS RELATED to electric car efficiency as you could easily see if you open the link and read the material.
regards
Mech