I own cruisers, touring, dual sport, sport, and the Versys. I would not consider the stock Versys an interstate bike. You will feel the turbulance off the SUVs, MiniVans, and Trucks more than you will on a big heavy cruiser. The Versys is a blast and very easy to ride compared to a cruiser. It is nimble, maneuverable, quick and just loves the curvy hilly terrain.
My ride to work includes 7 miles on a 65MPH parkway. I usually just get into a tucked position if I ride the Versys to work. No problem for 7 miles but I wouldn't want to ride 3 hours like that.