Do rental companies exclude the road? Is the unpaved road too rough for a minivan? I understand the road is like a washboard in some places, especially after a lot of rain. I expect to drive slowly, less than 30 mph. My current understanding of Denali Highway is that it's beautiful but conditions change from day to day. Is there hunting in August that would cause wildlife to be scarce near the road? Any thoughts about traveling the road are appreciated as posts I could find were from 2008 and before.