These plug in hybrid electric cars are technological tour-de-force cars. They are not yet, appliances like the modern automobile (think Camry) . There is risk with complexity and the enormous electrical potential of these cars is a risk, like it or not.
However, like anything, these risks can be mitigated by proper design. That will take time. I'm enamored with the technology, I want one of these cars and I do hope it works out in the end.
BUT, a significant portion of my salary goes directly to a group that does as it sees fit with MY MONEY. Funding these companies is a joke AND I'M NOT OK WITH THAT. Funding research at a university, or other lab is OK, with full public dissemination of the findings. Let's let the free market decide and may the best products win.