If you use nuclear generated electricity there is only one cost. If you choose wind & solar, when the wind isn't blowing or it's dark you need to provide a backup power source e.g. nuclear. Consequently wind and solar can never be cheaper. And don't get me started on storage costs.

“We shall meet in the place where there is no darkness.” George Orwell, 1984

If I had a time machine I'd go back to iOS 5.1.1!

This is very bizarre; I once bought a sealed Nut & Bolt kit from Toys R Us only to find a game cartridge inside!

I have a few comments I'd like to share on this issue.
During my last couple of holidays in America (New York City and area, San Francisco and area) I found the road junctions very frustrating. I can't believe how slow the progress is through a typical American town and the reasons are 4-way stops and traffic lights; stop, go, stop, go, stop, go. Haven't you guys heard of roundabouts?
Also, slow drivers are a real pain and no doubt cause many an accident. Speed cameras should be used to enforce minimum as well as maximum speeds.
Finally, why all the concern about saving money on petrol (gas)? I see driving fast as a luxury that I'm prepared to pay for.