When making the UV’s for the cabin I realised that the cabin had been made with boards, so rather than mapping out the cabin like a box, I mapped one board and then quickly remade the cabin, duplicating the board multiple times. So, when I texture that one board, the whole cabin would be textured, allowing me to fit more detail into the texture
When making the car texture I started off unfolding it like a box but then changed my approach as I remembered how I constructed it, I created one half and then duplicated that half on to the other side, so I returned to that, creating the UV’s for one side then duplicating across, this meant that UV’s overlapped perfectly