If you place the cam on the tree at the street, how will you get the cable under the sidewalk? I have done that before, when I was much younger, and it was not fun. Plus you have mature trees there. There will be roots galore. Before you commit to that position, you should test it. Also, are you going to have a cam looking in the opposite direction to catch the cars that do not have front plates? I have set mine up this way and it helps as sometimes one cam does not get a good cap but the other cam does.