(June 12, 2015) -- The regulatory obstacles facing Tesla Motors are all visible in a suburban showroom outside of Salt Lake City. Tesla planned to use this space to display its new electric cars and take orders for them. The floor-to-ceiling glass walls were polished, and the company name, in hypermodern lettering, was written across the top of the one-story building. One week before the facility was to open last spring, however, the Utah attorney general’s office got in touch and informed Tesla that its plan of direct-to-consumer sales violated state law, and that it did not qualify for a dealer’s license. The result was that a car company had a retail display center but that it was not allowed to sell cars there....