1. A method to control functions in a vehicle using gestures carried out in three-dimensional space, the method comprising: a) determining whether a first gesture carried out in three-dimensional space is detected by an image-based detection procedure; b) determining, if is determined that the first gesture has been detected, whether the first gesture is a gesture directed towards a virtual object superimposed onto a real environment around the vehicle; c) determining whether a second gesture carried out in three-dimensional space is detected by the image-based detection procedure; d) determining, if it is determined that the second gesture has been detected, whether the detected second gesture is a gesture allocated to a manipulation of the virtual object; and e) manipulating the virtual object if it has been determined that the detected first gesture is the gesture directed towards the virtual object and the detected second gesture is the gesture allocated to the manipulation of the virtual object.