This picture, by Satoko Kawasaki, was on the Japan Times website. Santa-sama is seen taking a passenger around Tokyo's Marunouchi office district in his eco-friendly "Velotaxi" decorated for Christmas. Velotaxis are human powered with an electric motor assist. (It must be very good exercise - Santa seems to have lost a lot of weight.) They are made in Germany and are being operated in many cities around the world. The lights on this one are powered by electricity generated by rooftop solar panels during the day.
Here's promotional video about the Velotaxi (3 min 38 sec):