“TA-TEN-SHA” is an artwork of a bicycle run by a motor. 
In Japanese, a bicycle is called Ji-Ten-Sha (自転車) meaning the car drives by itself (自=Ji).
In the history of bicycles in Japan, then, it used to be called as “Ji-Zai-Sha (self-controllable vehicle)” or “Ji-Rin-Sha (self-wheeling vehicle)”.  The name of present Ji-Ten-Sha was a brand named by Torajiro Takeuchi, who did not put a deep meaning in the Chinese character “転“ (rotating). Nevertheless, the word Ji-Ten-Sha has been widely spread out, which makes me question myself. 
Why not “self-controllable-vehicle” but “self-rotating-vehicle”? From this question, I imagine where the bicycle itself is rotating. I tried to make the bicycle that meets the real meaning by rotating the vehicle itself.
Yet, what I have created is not the “Ji-Ten-Sha” that rotates by its own power, but it turns out ot be “Ta(他 – other)-Ten-Sha” rotates by the power of the motor. 
Hence, the title of the work became “Ta-ten-sha”.