Overview: You have to be a special kind of couple to survive riding a tandem bike. It is around 70 miles as the crow flies between John O’Groats and Cape Wrath. But if you follow the road, it’s a bit closer to 100 miles - 100 or so miles that wildlife film-maker Andrew O’Donnell and his pal Mark Taylor decided to cycle on a borrowed tandem bicycle, with a trailer attached to the back. Their plan is to travel from corner to corner of the north coast of the Scottish mainland going from east to west. But as with every time you go roaming in the wild, sometimes you need to see what happens along the road.