Hi,
Why have there been no real advances in HO scale. My grandson has my original Lionel O gauge set and this year I got him a post war Milk Car. Looking at You Tube, I see all types of O gauge action cars and set ups. Why then is there nothing similar available in HO ? I would like to add some action cars to my layout like those available for O gauge. I have heard that the reason is that the HO cars are too small for the mechanisms but come on, electronics have come a long way. So does anyone have any insight as to why there are no real action cars in HO?