(FILES) This file photo taken on March 31, 2016 shows a sales reprsentative (L) helping a customer pre-order, the as yet unseen Tesla Model 3, in the Tesla store in Santa Monica, California. Tesla’s first lower-priced Model 3 will come off the assembly line on July 7, 2017, two weeks early, CEO Elon Musk announced on July 3. ROBYN BECK / AFP In another setback for the high-flying electric carmaker, Tesla’s Model S once again fell short of the top rating in a key crash test, an independent testing agency said Thursday. On the eve of seeing its first mass-market Model 3 roll off the assembly line, the Insurance Institute for Highway Safety said that despite changes made to the vehicles produced after January, the Model S was again only able to attain an acceptable rating in the small-overlap test conducted in February. That test mimics a car hitting a tree or a pole. As a result, Tesla failed to achieve the IIHS Top Safety Pick rating, which requires a “good” rating in all five of its ...