A fuel additive to significantly improve fuel economy of internal combustion engines, a process of making the additive and a process of using the additive. The integrated circuit device includes a differential driver to generate a differential signal having true and complement signal components that exhibit a relative timing relationship. The second memory stores one or more packets for transmission via a communication link. The data storage device comprises a remapping circuit that remaps the unused block portion to an opportunistic block address. Otherwise, the detection reference voltage is changed in level, and a new rotor-position detecting signal is generated to repeat the procedure for detecting the rotor position. The dichromatic dye of the first liquid crystal region is aligned along the alignment direction of the first alignment film.