I agree. I can't, at this time, recommend anyone in South Florida buy a LEAF due to our consistently warm temperatures.
Come on over to the dark side and buy a Volt I traded my Volt with a Leaf owner for 24 hours. I have come to two realizations.
1) I could absolutely get by with the vast majority of my needs with a Leaf
2) The amount of gasoline I have burned in almost 6 months in the Volt (13.1 with 10,200 miles) is not enough to make me feel as though being a purist is worth it, not do I think it would offend the vast majority of Leaf owners that just don't want to burn any gas.
I am lucky to have the ability to charge at work, but I am getting 40-45 miles every day, except in the absolute cold of winter when I am getting 33-35.
I think Nissan has hurt itself in several ways.
1) No capacity warranty on the battery like the Volt.
2) Allowing the users access to the totality of the battery and not allowing for a degredation reserve
3) No thermal management- don't really know how much difference this would make in the Phoenix area
The Volt has had its share of issues, but GM seemed to make some good decisions regarding battery management so the car would be well under the way to general acceptance before anyone starts seeing any range degredation, and the nature of the Volt, the degredation doesn't mean much.
Don't hate on me, please. I am on a LOT of plug in vehicle committees, and am VERY committed in making all electric vehicles accepted. I am pissed at Nissan, because I think all electric vehicles will be tainted by Nissan's battery failures, if this ends up being a bigger issue. The public has proven it doesnt have the ability to understand technical details.