Are there any restrictions on driving from Taroko to Taichung, over road 8 and 14甲 (or just road 8 through Baxianshan National Forest Recreation Area)? Google Maps doesn't even direct all the way through road 8, presumably due to the roadworks near Te-Chi reservoir (where the Google street view ends), but the road might be passable now?
Does one need a permit for driving through Taroko National Park, similar to the one, one needs to apply for when hiking?
Also, as this is a mountainous area, is a simple economy hire car enough for this journey or the gradients might be a bit too much? Just asking as when I was in Thailand the hire car I had was really struggling to make some of the hills.