RE: deer driving
As long as they pass a driving proficiency test, have good eyesight, and insurance I don't see why we shouldn't let them drive.
On a serious note; I usually don't do drives except on property where I don't hunt often (throw-away spots)or in areas where conventional hunting methods aren't realistic (ie a small island of trees in a crop field). One place I like to push is a friend's property that has a lot of wooded ditches extending out into crops. We set up at the base finger of woods, where it joins a large forest and push from the point of the "finger" into the woods. This is usually a mid-day hunt and then we go do our stand hunts elsewhere in the afternoon.