Progress stalled again

Don't worry, I haven't run out of materials, not yet. It's because I'm entering my exam period, hence I will not do anything more.However, there is some good news, my good friend Shaquille Henry will do some work on the cog and the wheels, so hopefully there will be something done by Xmas. Good news, since the train does not feature A/C units on the roof, I don't need to do that...