I actually looked at the Volt and some other options and decided on a cheap Toyota Corolla at 38 miles to the gallon. Your Volt weighing in at 41,000 no options with a 7500 tax credit that won’t be available to the end of the year but let’s say they give you the credit right off the bat. I bought a Toyota Corolla for $14000 with no extra bells and whistles for work at 39 mpg.
So let’s do the math.

http://www.chevrolet.com/volt-electric-car/features-specs/

Volt $33500 (After rebate)
Corolla $14000
Volt 200 MPG (assuming with your set up) 93 from mfg
Corolla 39 MPG
Volt $50 Gas per week on the high side when needed
Corolla $50 Gas per week on the high side

$19500 difference in price, I would have to deplete $19500 in gas to break even. Let’s assume at $50 a gallon per week (which is on the very high side, I usually in the low $40’s) it would take me 390 weeks or 7.5 years to break even not taking in account the battery you have to replace on that in 8 years at over $3000 dollar hit (which adds 1.1 years of gas for me at 8 years). These are basic numbers not including maintenance etc… with both vehicles just looking at fuel cost right now and not to mention your solar cell on your house would be another expenditure that hasn’t gotten truly cheap enough to pay for itself yet.
In time both solar and electric will be the way to go, but right now the cost vs payoff is too high right now but it is getting better. I like the idea though and if you got the money to through at it, it would be a nice idea to not use the gas engine and stay electric but have the gas option available but it isn’t practical economical right at this time. Good Video though and thanks for sharing.


And in reality I can go 2 weeks on a fill for my use which would really put me in my case 17 years (2 battery changes for you)to break even and by then I would be having to buy another car. I also looked at the solar set up you have and found similar results. I'm not putting down your set up, I think you are on the right track and if I had the money to spend I would definitely go all solar (off the grid) and a hybrid like you have with that option to use gas if needed. All I'm saying is the prices need to come way down for me to afford a set up like you have. Great idea and one day when they get solar prices to come down more I will be all over that with solar and wind but we don't get much wind here unfortunately. Low wind turbines are getting better but not practical yet.