In a power seat operation device, a slider that is supported so as to be slidable in a radial direction with respect to a dial slides toward the radial direction center of the dial during rotation of the dial. A knob engagement portion that is provided to the slider is thereby disposed between a pair of slider engagement portions that are provided to a knob. This enables rotational operation of the knob to be restricted. However, during rotational operation of the knob, one out of the pair of slider engagement portions opposes the knob engagement portion from toward the radial direction center of the dial. This enables rotational operation of the dial in conjunction with sliding of the slider to be restricted.

An operation device according to the present invention includes a touch-sensitive operation surface placed in a vehicle and a detecting unit configured to detect touch operation by an operator on the touch-sensitive operation surface. On the touch-sensitive operation surface, a guide part having a convex shape or a concave shape and a planar operation part to be an operation location having a planar shape located around the guide part are formed. The detecting unit is configured to detect slide operation on the guide part from the planar operation part, and accept later operation on a predetermined operation location as an operation instruction set in accordance with a status of the slide operation on the guide part.

An article and method to provide vehicle interior panels that offer control of vehicle systems where the control features visually present themselves to the occupant when a given control is desired or in need. The method includes the use of proximity sensors and a shapeshifting (morphing) surface.