Just MHO as they say but I am not entirely convinced GM really want the Volt to take off. (Ditto EV-1)
It’s not all bad. The concept of an electric car with a generator (which goes nowhere near the drive train) is a sound way foward.
But – by the time it come to market it will be a so-so addition to a market that is way ahead in some respects already.
That said your basic point is quite right.