Maybe it's not just about cost, but about driving a vehicle that doesn't directly contribute to diffused emissions? And use motor oil, hydraulic fluid, coolant, belts, etc?
Many '11-'12 Leaf owners are already complaining about significantly reduced ranges on their vehicles. What happens after 60,000 miles if your battery starts rapidly going under 9 bars?
Keep driving with terrible range anxiety? Plan your routes with chargers in mind? Have a stopless commute now require you to stop and charge, making trips even longer?
Replace the battery pack?
http://www.greencarreports.com/news/1111264_new-life-for-old...
Whoops, that's going to be $6,200.
> Keep driving with terrible range anxiety?
If we're bringing all of this up; we must consider the reliability increase as well.