Very impressive !!
However, being a train fan I must ask one question ... besides the jet engines, were is the main engine located? Too funny lots of self defense, which is important don't get me wrong, but the big guy better hope his trip is mainly downhill.
Very cool though. In fact, the "weapons" are the best part so ...
Its too bad you weren't able to enter it in the contest. Again, Great job!
PS
I apologize ... after looking at it again, I answered my own question ... it's powered by pure evil. Much more efficient than diesel.