Interesting but unusual coastdown plot, which probably highlights what discussed in subsequent posts: drivetrain friction is not negligible, but similar to air drag and friction roll in strength; else, the chart would look different.
Here are some literature data (not on Leaf):
V Vehicle 1...
So 6000€ for batteries, 15000€ for car... and 15000€ for Research&Development, I guess. :?
But don't lithium batteries cost 0,50€/Wh? (i.e. 12000 € for Leaf)
I found this old but very interesting excel sheet for vehicle performance comparisons:
http://www.offroadvw.net/exceldyno" onclick="window.open(this.href);return false;
How could I fill it up with some EV data?