Some of these numbers are, we think, pretty optimistic (and seem to be taken directly from manufacturer estimates). Sales of the Nissan Leaf are estimated to hit 300,000 by 2015 and the DOE projects that Fisker dealers will hand over the keys to 195,000 Ninas in slightly more than four years' time. The Ford Focus Electric will supposedly make a decent splash with 70,000 units sold by 2015 and sales of the Think City are expected to eclipse the 50,000-unit mark.
Oddly, the report omits vehicles like Toyota's Plug-in Prius and Coda's electric Sedan and seems to imply that all of the automakers evaluated will be able to somehow stick exactly to their planned production numbers. Therefore, we'd suggest that the DOE's "conservative" estimates be taken with a grain of salt.
[Source: Venture Beat, U.S. Department of Energy (pdf)]