The #1 idea of the Volt is…
The #1 idea of the Volt is FREEDOM. In America that should of been the main marketing stamp for the Volt. Total freedom and peace of mind. You can even use the car as a electric generator on camping trips or if the power goes out in the home. Simple modification of adding an inverter in the back for plug outlets.
Chevy makes this marvel and GM tries to figure out how to shove it into premade situations. The Volt was a leader car. You push the concept to change the direction of the market.
If GM wants to bury the technology, then just sell it or license it out. But they know how great it is and don't want someone else to take it to the real level it should be.
Again the Volt is freedom. Not just in availability of gas or electric, but in cost. If one costs way more then the other you use the cheaper option.
A bigger gas tank would be great. And I can only imagine how great a solid state battery would be in a Volt once they start rolling out. When those batteries come out then perhaps a SUV could be made with Volt's tech.
And yes, let the generator be able to charge up the battery to full. Don't limit options. Go heavy on FREEDOM.