Line the driveway on Johns side - Syzygium australe 'Aussie Southern' / Lilly Pilly. Could be good for screening the neighbour's garage, behind the jacaranda. Looks like it is quite narrow, or can be kept that way at least.
Hornbeam Hedge in Pennsylvania. A sheared fastigiate European hornbeam hedge (under-planted with liriope) lines a driveway in Villanova, PA. Designer John Shandra of Gale Nurseries wanted to create a sharp, clean line between public and private space.