Complex sentence: In July 2010 VW announced the production version of the e-up! all-electric car, with sales scheduled to begin in 2013, and was subsequently unveiled at the September 2013 Frankfurt Motor Show.
Split into simpler sentences: In July 2010 VW announced the production of the e-up! all-electric car, with sales scheduled to begin in 2013. The production e-up! was unveiled at the September 2013 Frankfurt Motor Show.