Hill, your interpretation that the EPA would require replacement of any Leaf battery pack that failed to provide 100 miles of range after 100,000 miles is an unconventional one. The conventional interpretation is that the battery (and drive train, I think) must be guaranteed against DEFECTS in material or workmanship. Nissan specifically disclaims "gradual reduction" in range, and without defining "gradual" you don't have a leg to stand on against Nissan's stable of lawyers if your battery has 50 miles of range in 3 years. The car does indeed perform without flaw in hot weather. It's been tested for that. But heat degrades batteries. Keeping them cool (or more precisely, keeping them within optimal operational temperatures, since some battery chemistries operate at hundred of degrees Fahrenheit) prolongs their life. And maybe the Leaf does not need cooling. But just saying "Trust us, our battery doesn't need it" is not an explanation. It's a demand for blind trust. That trust may in the end prove to be justified. But after a year of lies and broken promises, I am less inclined to trust Nissan than I was when I placed my order. And the fact that they state openly that frequent fast charging will shorten the life of the pack is an admission that the pack does degrade when it gets hot. The Leaf is an excellent car. Nissan showed contempt for its customers in the way it handled the roll-out and the way it refused to explain issues of serious concern to those customers not inclined to trust Nissan blindly. BTW I was told by someone at the Nissan dealership (treat this as hearsay) that the people in charge of the Leaf roll-out have been fired due to the way they screwed up the process, and the fellow who told me this was as angry at Nissan as I was, since they treated their dealers as badly as they treated their customers. I have forgiven Nissan. In the end I'm glad they screwed up my order and lied to me about it until I gave up on them because it pushed me to get the car that I now consider to be the best EV you can buy today. I will never buy a car from Nissan. But I've forgiven them. (Just because you've forgiven the person who pushed you down the stairs, doesn't mean you'll turn your back on them again.) Nice weather. Time to go for a drive in the country.