How Many Motorized Road Vehicles Are There?

I guess it is very hard to find "N" batteries.  I only found "N" batteries in one shop (a watch repair shop).

I ordered some cheapos on ali express


Hi All,
this is really cool. We have some of these (all are listed). we had the blue minivan but one of my kids was playing with it in the garage and it got run over when my wife got home in her... wait for it... minivan! 



the frame still works and runs, amazingly. but the body is a million pieces. ill grab some pics. But here are my questions:
* does anyone know if there are other Tomica bodies that would fit on the frame?
* and then, how the heck can you tell they are motorized when looking online??
KM