How about a piece of metal you attach to some vehicles front bumper to cut barb wire fences. Not for hatchbacks but for pickup trucks.
it doesnt take alot of technology to sharpen a piece of metal. maybe only avail to crafting not to be bought but a little diffficult to obtain.
introduce cb radios to the game. radios you can communicate with anyone on that frequency in your range. its the same as direct communication with more range, can be installed in all civilian vehicles.