Ahead of BMW's press conference in Munich, F1 supremo Bernie Ecclestone appears to have let the cat out of the bag regarding the German manufacturer's future in the sport.
Talking to BBC Radio 5 Live, Ecclestone said the team, which had set itself a series of annual goals since entering the sport as a manufacturer team in its own right in 2009, had made it clear that it was targeting the World Championship title in year three.
"It's not quite been like that so perhaps that's why they've decided to stop," he said.
"When you consider how much money they've spent and the results they've got, it's probably not such a good investment," he added. "They were quite sure that they were going to win the championship within three years, and I was hoping they would."