Hualien, where I hope to go next Wednesday (but it doesn't seem likely) is on the East coast of Taiwan, I live on the West coast. Check out the map. In order to get there you have to travel around the island. There is a road that runs through the mountains but it is prone to being flooded and of there being rockslides if there is bad weather.
I have the idea of a road trip to drive across, but i'll have to wait for warmer weather.