Instruct: Classify Amazon reviews into positive or negative sentiment
Query: HO scale for Model Train Layout

While I don't own this car, I want to pass on that I am pretty sure this car is designed to be used on HO scale Model Train layout. That means it will not be bigger than a normal hot wheels or matchbox car, in fact it might be smaller. I think that this should have been stated in the description, but is not. I think because they say "HO" they assume that it is understood what this car is for.This would also apply to other cars listed with an 'N'. I am guessing they are N scale (I model in N scale) and these would be VERY tiny.