I've only ridden the VA portion, but I can tell you that 45 mph is NOT fast enough up that way. It's miles of back to back sweepers varying from 50 to 75 mph. My friend and I even had a humourous run in with John (well, Jane) Law. We were doing about 85 down one of the rare straights when we noticed that the one of those tourist cagers was actually a lightly marked ranger car when the lights came on. We pulled over at the next available stop and she asked us how fast we were going. My buddy flat out lied and said 50 and I thought we were going to go to jail for pissing her off with a stupid statement like that. Luckily, she said that she "just couldn't believe" the 75 mph she clocked us at so she ran the self-test on the gun and it was reporting a problem. She just thanked us for not running and said she wanted to tell us why she started to pull us over "by mistake." Yup, that gun was busted, but I wasn't about to tell her that it's because it's reading 10 mph slow!