Crazy Train

I started this drawing a few months ago and finally finished it last night.  I like the Chinese dragon look of the front grill/maw and mushroom car is kind of amusing.  I don't know why it's there except it was part of my initial imagining.  I also like how the cars are not all attached head to tail, but how some branch off the side of others. I was going to draw a track or some sort of environment but that didn't seem so important and might pose too many questions (how do the branched-off cars stay on track? how wide is the train's path? etc). It's fun to see the little people on board and amusing to wonder where they're going and why, as well as what might be happening en route.