I did a "quickie" tour in 1998 from Kitty Hawk to Avon and back
Traffic, yes there is a lot of traffic. It dies down once you get south of the Bridge to Roanoke Island (US 64)
Not much to see, unless you like sand dunes. It also tends to be windy, so you may plan on that. I was orginally going to go to Hattereas (where the Ferry to Orcarcoke island is) but cut it short