Autobahn traffic totally dominates but all you see are trees

The park at Bindermichl is built over the A7 autobahn tunnel. At the ends of the park the autobahn noise is present in full force. The mismatch between what you hear and what you see is pretty extreme. While making this recording I was amongst very tall mature trees. They have to listen to this never ending roar 24/7 year after year. I wonder what effect that has on them.