A mirror assembly has a housing that houses a mirrored reflecting surface for enabling a person in a driver’s compartment of a vehicle cab to look through a side door window opening and see a field of view toward the rear of the vehicle. At least a portion of the memory in which the data relating to the parameter of the workpiece is stored, is configured as a shared memory so as to allow the machine control to immediately retrieve and use the stored data relating to the parameter of the workpiece. Preferably but not exclusively, the set of sequences is formed by circular delay-Doppler shifts of the base sequence. Also, the active layer, the optical guide layer, and the cladding layer, which are capable of enhancing the optical confinement to the active layer, are constituted, and the cladding layer is constituted with bulk crystals. The motor generator is accommodated in and operably connected to the rotor.