I express my concern at the Toyota dealer and he could not find it. If you go to you tube, there are videos with a similar noise. I sent a copy of a video with the noise to the dealer today. It is very annoying and I feel that the vehicle may not be safe to drive. The noise occurs between 60-80 mph. It seems like it occurs when the vehicle has a mild wave like ride. It sounds like the drivers side tire is rubbing against the fender well, or the drive shaft may be rubbing against the under carriage. The sound goes away when I slow down. It used to occur maybe once every 2 weeks. Now, it seems to be happening almost every time I drive fast.