then log walls.

but its probably not really the right way to do it, anyway. you can do this easier without walls in the first place. Set up a shooting gallery in range of the alarmed car by fortifying a small house in range. you can park the car wherever you have a clear line of sight. Give yourself some options to escape. Then shoot them as they go near the car til youre out of ammo or have to bug out. Then your base which is fortified and not near this mess is a nice safe place to go home to.

I really don't think there is any reason to spend two weeks in game chopping every tree in the neighborhood to build some giant log wall thing that will block your gunfire anyway.

but you do you buddy don't let anyone stop you