Ideally, your car is as quiet as can be. In fact, some electric vehicles are so quiet they're given fake engine noises (some are truly bizarre). It's natural to hear some revving when you hit the ...
For quite a while now, my USB3 LaCie 1TB HDD starts beeping (a very short, high-pitched sound) sometimes when trying to connect it to one of the ports in my laptop, and refuses to become accessible.