Well there are many promises in the world, many concept cars, but the only ones who really pushes the 100% electric theme are:
1) Tesla
2) Renault - just sold 15.000 EV-Kangoos
3) Mitsubishi
Mercedes for instance has like Volkswagen ready and tested cars, but they don't sell it till now ...
... you know who are the main shareholders of car manufacturers ...
Strategy: "better sell a less gas in hybrids than no gas"
This concept car game is only to gain time giving the mankind the feeling of "green" compnies, but in fact they don't invest to the technology.
One Mercedes developer whistle-blowed to me that Mercedes in 2011 had only one electric test car - for all developers and evens of the whole world !
Renault is developing cars for the city, in my eyes ok for many people's use.
But I believe only in Tesla, they are making facts and cars, which you can buy and really use for everyday driving - also long distance, like my 10.000 km trip last year.
And I will proove it again with the first electric around the world race:
the first around the world electric car race - 80 electric days - world round trip starting on May 1st 2012 in Barcelona, crossing US, China, Russia and Europe