Beijing-based Luckin Coffee Inc. announced the launch of Luckin Pop, a smart vending machine, and Luckin Coffee Express, a smart coffee machine, early Wednesday at a press conference. Luckin Pop will be in office buildings, bus terminals, airports and on college campuses and other locations. These two new channels are part of the "unmanned retail network" that Luckin is building, which does away with payroll and rental costs, as well as other expenses, the company said. At the end of 2019, Luckin Coffee had 4,507 self-operated stores. Luckin stock is up 3.6% in Wednesday trading, and has nearly doubled, up 96.3% over the past three months. The S&P 500 index /zigman2/quotes/210599714/realtime SPX +0.06% is up 12.2% over the last three months.