Used car-buying and sales website Shift Technologies Inc. today added Portland among its first cities, the company said. San Francisco-based Shift is backed by investors, including Oregon's Lithia Motors Inc. (NYSE: LAD), Alliance Ventures, BMW iVentures and Goldman Sachs Investment Partners. In 2018, Shift sold 8,500 used cars, a 70% increase from the previous year, according to the company. Shift projects sales of up to 15,000 cars this year. The company says it seeks to make car-buying fast,...