From the article, it sounds like it will be about 5 years before we see a production smart hybrid. Quote from article follows below:
"Mercedes says it has solved those issues for the hybrid batteries and hopes to say the same soon for a different version needed for its pure electric car based on its Smart brand of tiny two-seaters."
"Our plan in the next two to three years is to have a test fleet of Smart electric vehicles," Mercedes engineer and Vice President Herbert Kohler, who heads advanced powertrain operations, said in an interview at the auto show here. He said it would take several years to be sure the setup is right for mass production.
source:
http://tinyurl.com/5p9p44