What if As Well - electric overdrive -Way back I had several Volvo automobiles on which - as well as the standard transmission - they had an electric shift overdrive unit which was actually spliced into the driveshaft ! Of course the O/D unit was mechanical - with a simple electrical engagement shift - that whole O/D unit didn't weigh 100 pounds - but huge fuel economy gains -What If, What If - drive shaft O/D unit combined and control interlocked with CoilDriver - would be like having a very efficient 3 speed automatic transmission !! No ??