Wow, I had such an idea years ago when walking under blazing sun following gps directions, I wished that it would plan the route according to shade.
There's a dark and a troubled side of life;
There's a bright and a sunny side, too;
Tho' we meet with the darkness and strife,
The sunny side we also may view.
Keep on the sunny side, always on the sunny side,
Keep on the sunny side of life;
It will help us every day, it will brighten all the way,
If we keep on the sunny side of life.