It doesn't look like a motorised wheelchair. It is the slope that is helping him gain momentum when he is kicking at at mrt officer, who was probably trying to tell him not to solicit for money inside the station. Even though this video is blurry, I think I know this idiotic pretentious old man. He looks very familiar and hang around Pek Kio, Farrer Park, Little India, Rochor and Bugis area Once bitten twice shy if you out of kindness try to help him. I have seen him harassing people by shouting for help and asking for money and if a passer by ignore him, he will shout at the top of his voice "人在做天在看“. I have also seen many innocent passers-by who give him $2 and he loudly screamed at them for being stingy and curse them outright. He will also pull people outside mosques, Indian temples and Chinese temples and ask for help and money. I always hope that one day, a speeding car will knock him down and kill him once and for all. He is a scammer playing and preying on other people's good heartedness and money.