【検証】デリカD:5で国道23号を完全走破すると何時間かかるのか？

I drove the entire length of National Route 23 in a Delica D:5. In Aichi Prefecture, with the Gamagori Bypass fully open, there are no traffic lights between Toyohashi and Nagoya. The kilometer markers suddenly drop to zero...? Unusually for a national highway, it doesn't connect to any other roads at its end. I'll introduce National Route 23, which has many interesting points to see.