A portable office device is adapted for use with a seat in a vehicle to form a desk and preferably has a main body with a plurality of storage compartments, an angled bottom, and a two-piece, hinged work surface member affixed to the main body that is selectively positionable between an open and closed position. When open the work surface member includes an expanded, co-planar work surface suitable for writing or a laptop computer. The portable office device also includes a receptacle adapted to removably receive either a spacer or a filler member/plug, where the spacer and plug enable the portable office device to be selectively positioned within the vehicle providing a greater range of convenient and comfortable use for users of the device. The ability to selectively position the office device in the vehicle passenger compartment, along with a two piece work surface member and an angled bottom, creates a convenient apparatus for both working on and storing work related items in a vehicle.