Press the left/right arrows to make it move, or down arrow to make it stop. When the train is offscreen, the thought bubble tells how far it is Hit space to change the train... It's almost fun to hold down the right arrow for a minute until the train is far away, then stop it and hold down the left arrow until it comes zooming back - it gets going pretty fast. Space for a surprise. Yes, I am easily amused. So what?
