SOMETIMES, Mother Nature has a better solution. Our neighbor's tree had become much too large for the location and a huge section of the tree split and tumbled to the ground. In fact, the limbs and branches had become too heavy to be supported by the trunk... and natural pruning was the result as gravity pulled down some of the large tree limbs.
We had a temporary blockage of the street and sidewalk. Fortunately the Palo Alto city maintenance crew arrived soon to complete the pruning process and clean up the debris. The entire job took about thirty minutes, as the sidewalk and roadway was cleared once again.
Perhaps our neighbor would be better served if the tree were trimmed and reduce its size to a manageable shape. Next time their car may need a little body work!