A work surface/storage system can be attached to a motor vehicle which has a passenger compartment with a driver seat, a passenger seat, a passenger restraint belt, and a dash panel in front of the passenger seat. A main body section of the system includes at least one flat surface for providing a writing support for a person in the driver seat, at least one storage bin, and a bottom surface for positioning on the passenger seat. A belt receptacle is located at a rearward end of the main body for capturing the passenger restraint belt so that tension in the passenger restraint belt loads the rearward end against the passenger seat. A front wing section extends forward and upward from the main body section to a distal end. The distal end includes an attachment tab. A bay is provided in the dash panel including a holder for capturing the attachment tab.