Interesting development for Leaf owners. The Tesla press conference scheduled for tonite where Musk will demonstrate quick swap battery packs for the Model S suggests Tesla may not go this route.
http://green.autoblog.com/2013/06/20/nissan-leaf-battery-replacement-will-cost-100-month/
http://green.autoblog.com/2013/06/20/nissan-leaf-battery-replacement-will-cost-100-month/