http://www.youtube.com/watch?v=XVXpmAEmRjo
(hmm, don't know why that doesn't show up properly..)
Not great, but a quick video taken in my work carpark. Whine seems to be engine rev related, not road speed related. If you need something clearer I'll try and grab something with my better camera this afternoon.
Main thing stopping me thinking its 'normal' is that when driving normally in traffic around town at low revs (i.e not pushing the throttle hard and under 3k revs), the car sounds more like a vaccuum cleaner than a flat-6.