Here’s the PDF with the description of the trip (sorry couldn’t paste it as text, long story): http://vancouvervelovets.org/pdf/Taiwan trip.PDF
And here’s the video! https://youtu.be/IGX6yW5cLhc
You can see their route on the map on the left. They went anti-clockwise, down the west coast first. At the top right you can see where they chose to take a train to avoid the dangerous stretch of narrow road.