After 3 hours the whine was annoying. It only whines under acceleration. So lets say your going 70 mph its whines no matter what, cruise control or not, but it stops immediately when you let off the gas. There are some sweet spots tho, around 50 it was very quite. After 6 hours I was dying. So for long distance driving I say no way. For a couple hours or so at a time it should be no problem. Also I had a hard time hearing people talk, my ears were buzzing bad. When I got home at 4am I felt horrible. I woke up still buzzing.Yes, please keep us posted. Very interested in how it is as a tourer.