Looks like this is a standard 4x4 variant and the body work more original.Nice to see such good use of a well built vehicle. Original MINI BUS when compared to the Yellow and white bus in the background at the bus museum in first post.
As for spare wheels i guess they would keep a selection at the service garage and take a replacement out to the vehicle, After all the pace of life would be that much slower!
Thanks for sharing the excellent information. I wonder how many of these HUP buses are lurking in barns ready to be discovered.