You'd be surprised (or not) on how easily the media is fooled into believing a press release means an actual car is to be released.
But to be fair, all three listed in the article:
The ZAP Alias, U.S. 2009
Toyota FT-HS, - U.S. 2009
Honda CR-Z, - E.U. 2009
were concept vehicles, so the possibility of them being released is less in the first place.