Ok but not the best

i think i agree on the japan's invisible train

I think I don't agree to have japans invisible train because for example: What happens if a young child doesn't know why there is a track and then he or she runs on the track and notice that a train is coming and because the train is invisible he will not know the train is going towards her/him. So I disagree to have japans invisible train.

Ok but not the best

I want one

Ok but not the best