Business Green: The success of the upcoming initial public offering (IPO) from electric car manufacturer Tesla Motors rests on the company’s ability to break out of its sports car niche into wider automotive market. That appears to be to the consensus from commentators and analysts following the announcement by the company last week that it will launch its long-anticipated IPO on June 29. The Californian-based company expects to sell 11.1 million shares at between $14 and $16 a share raising …