The reason for selling it is simply due to the need for more space. I used to have access to commercial vans for when I needed to move things and an SUV for hauling people when necessary. Since moving though I found myself in need of something a bit more practical for day to day. It's been a spectacular little car that's never once given me an issue. If I didn't need something a bit larger I would still be happily driving it right now.
As for the harness it can very easily be reversed. I will most certainly remove it for the next owner unless they request otherwise.