Question: why the trees seems to be moving backward when we are in travelling? 

Answer: They dont. If they really seemed to be moving backward then we wouldnt be travelling. They would be moving backward-that is-if they travelled away from our back.\nTo prove they dont seem to be moving backward when we are travelling, look backward as you are travelling-at that point You are moving backward and the trees cannot seem to be moving forward if the trees seem to be moving backward to the driver. We travel and the trees remain constant. This knowledge allows our mind to accept the tree is not moving and that precludes the mind from thinking the tree is seemingly moving at all.Except for wind or whatever.
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