I can't see the road when I back out — what should I do?

You have to push the nose of the car past the end of the driveway and into the travel lane before you can see oncoming traffic. Low limbs hanging into the line of sight, a crown that starts at chest height, foliage that was fine in April and is a solid wall by July. A corner where you have started relying on hearing rather than seeing. Delivery drivers and the mail carrier swinging wide around it. This is a geometry problem, and it is almost always solvable without losing the tree. What blocks a driver is the band of foliage roughly between a seated driver's eye height and the height of a truck's mirrors — everything above that band is irrelevant to visibility. So "the tree is in the way" almost always means "about eight feet of the tree is in the way," and the remedy is to lift the crown clear of that band, not to take the tree out.