Found it !!!!!!!!!
The perfect way to make the Winter Scenes in the photos of the real train that are posted above animated!
Found this at the local ToysR Us for $12 today and tried it out worked great and went back for a 2nd one. Says $24 on line but perhaps check your local Toys R Us and see if on sale like our local store. Great value!
http://www.walmart.ca/en/ip/glow-book/6000022212718
http://www2.crayola.com/products/splash/glow-book/
If you look at the animated image in the 2nd link this shows what you can do with it or take it apart or do something like yourself.
There are 4 sheets of thick plastic that you slip into 4 slots on the "Book Binder edge"
each sleve that they fit into has 2 tiny LED lights that shine out into the plastic.
Where ever you use the included marker pens the clear surface lights up with that pen color.
So in the photos from the real train above the sort of neon looking images of the figures and trees etc. on the real train the lights change in layers to make it look like the cowboy is dancing and singing etc. the sleigh or animals moving etc. Santa dancing etc.
So with this light color thing you can draw different shapes on each layer, press button 5 on the left and the lights change slowly in sequence 1st lighting the 1st layer then the 1st layer goes out and the 2nd is lit then the 3rd then 4th.
So if you draw your moving figure each layer shows up in squence so it looks similar to the Train box cars where the lights layers come on and off to show the figures moving.
You could perhaps take this all apart cut it down to fit the side of the box car or build your own like this.
I am not sure what they use for the pens there are only the 6 colors included tried some other Crayola marker pens that look similar from the store but they do not work.
You can also create your own sequence of lights turning each of the 4 layers on and off in any order or time sequence.
Will run for 60 minutes then goes to sleep push button to reactivate the sequence.
Runs on 3 AA batteries.
I think I will mount mine the red power box below the train track level with the ends of the book pages sticking up about the top of the box car height. Fits well along the side just short about an inch on either end of the ends of the box car.
Will perhaps put dots for the lights around the edge of the car in different colors so it looks like they change.
I am mounting my train stationary in a Shadow box effect so hoping the lights will show up more then the box car sides.
1 more layer of red paint should have everything ready tomorrow.
Going to set this up at Polar Express train event at our local Railway museum in a couple of weeks.