Airbus has unveiled the latest employees helping it put together the hugely popular A320 passenger plane. The European planemaker has unveiled a new production line for its best-selling A320 jet with robots Luise and Renate joining human workers as it turns to new automation to help it deal with an eight-year order backlog. Airbus hopes digital technology will enable higher production and trigger a significant shift in research and development spending towards high-tech manufacturing. Airbus is is ramping up production of the single-aisle A320 jet, which competes with Boeing's 737, from 50 to 60 planes per month. The two robots, whose names were chosen by employees, will in particular help to drill over 2,000 holes to join the two halves of the fuselage together, work normally done by humans.