I think 200 miles is enough to cover 99% of most people's driving. Beyond that, a few brain cells will prevent you from getting caught without juice.
If you are that worried about it then a Volt, with a 40 mile (50 mile in the 2016) electric range followed by a 340 mile gas tank, solves the problem.
“I think 200 miles is enough to cover 99% of most people’s driving.”
Maybe in New York City or some other liberal bastion, but not in Real-World America. About 1/3 of the country drives to family on Thanksgiving and Christmas or on summer holiday.
It’s got a GM name plate on it. No post bail out junk for me.
Cmax energi? maybe.