Sorry, I'm being general when I say rear "axle" but this noise isn't wheel brg which is usually a drone around 40-60 mph, it is a definate motor sound at around 2mph which lasts for about 2 secs. I don't know much about 4 wheel steer systems or traction control but it's my suspicion that its from one of the two.
Prelude UK, i'm from Hampshire but I bought my car from Worthing in Sept last year.