Daimler’s Car2Go and BMW’s DriveNow may be merging their car-sharing services, according to a hint by the chief executive of DriveNow’s partner, Sixt. CEO Erich Sixt, who heads the Germany-based car rental company named after him, would not confirm that talks are under way, but suggested that it is in motion. “At the last press conference, I made clear that we are not involved. Today I can only say ‘no comment.’ This is of course a slightly different statement from the last one. Why things are dragging on is not down to us,” Sixt said Thursday. The merger question had come up in May, when Sixt said his company wasn’t involved in talks between the two car-sharing firms. He did share that Sixt’s 50-percent stake in DriveNow had been valued at about 480 million euros ($560 million).