Most families can't afford a $28,000 toy. It's a rich man's toy because it is largely useless as transportation more than 40 miles from a house. Unless people get used to waiting forever for their car to "fill up"...The Volt is still little more than a hybrid. The LEAF's cost being so much less would allow families to have a second gas guzzler for any trips over 50 miles.
Seriously, this stuff needs to go much further before it can be taken seriously. 100 mile ranges suck. Even for people who live in cities. Even my grandmother regularly drove too far away to get back home on one charge.
It will be better soon, but we can't afford to subsidize ourselves into bankruptcy in order to make them affordable for regular folks. First make them useful and comparable to today's product both in price and in usefulness, if it is comparable people will buy them.