Tesla Motors, Inc. is an American automotive and energy storage company that designs, manufactures, and sells luxury electric cars, electric vehicle powertrain components, and battery products. Tesla Motors is a public company that trades on the NASDAQ stock exchange under the symbol TSLA. In the first quarter of 2013, Tesla posted profits for the first time in its history. Tesla first gained widespread attention following their production of the Tesla Roadster, the first fully electric sports car. The company's second vehicle is the Model S, a fully electric luxury sedan, which was followed by the Model X, a crossover. Its next vehicle is the Model 3. Global Model S sales passed the 100,000 unit milestone in December 2015, three years and a half after its introduction. The Model S was the world's best selling plug-in electric vehicle in 2015. As of December 2015, the Model S ranks as the world's second best selling plug-in car in history after the Nissan Leaf. Tesla also markets electric powertrain components, including lithium-ion battery packs to automakers including Daimler and Toyota. CEO Elon Musk has said that he envisions Tesla Motors as an independent automaker, aimed at eventually offering electric cars at prices affordable to the average consumer. Pricing for the Tesla Model 3 is expected to start at US$35,000 before any government incentives, and deliveries are expected to begin by 2017. In 2015, Tesla announced Tesla Energy, a suite of batteries for homes (Powerwall), businesses, and utilities (Powerpack).