I would like to know more about what is innovative about the motors.  Also I'm not clear about their development.  It mentions that they are built by Siemens, but then they bring up the electromagnetic specialists from PML.  I will say that I worked at Siemens for about 10 years, and they wouldn't be involved in anything that didn't have merit.  I questioned the numbers from the diary author about automobiles being 15% efficient.  I recently had discussions online with engineers I know from college about this, and the numbers 22-23% efficiency come to mind.  And those numbers wear hard to beat (believe it or not) with other technologies.  The interesting thing about the plug in feature is that it brings other fuels into the transportation energy mix.  

Finally, I want to learn more about the batteries.  62 miles is a surprise to me.  Also, I want to know their cost, what their serviceable lifetime is, and what their replacement cost will be.  I have heard rumors about them being leased to the care owners so a big time replacement doesn't hit them all at once, so you know they won't be cheap.  Finally I wonder about their impact on the environment and what the long term availability of the commodities that go into their manufacture.  

Thanks for the link to the diary!