Could be your cooling fan. And depending on what year your car is, you could have two cooling fans. My cavalier did the same thing. The fan would try to go on when the car heated up, but couldn't. I heard a distinct humming noise with it. It didn't cause any problems until I got stuck on the highway in the summer and my car almost overheated. Take it to a service station.
Have you checked your transmission fluid? Try that Cindy
There can be a slight humming noise while driving a neon. This sound could come purely from the engine to indicate that it is running.
i had some type of problem with my Transmission it had a loud humming noise whenever i start, the humming would go away when ever i start moving, but when i came up to a stop sign or a red light the humming would start, my friend who is a very good repair in all type of automotive told me my transmission oil pump was bad, well after he change the transmission oil pump the problem was gone.
Bad wheel bearing
Wheel bearing.
Certain types of tires may cause a brief humming noise after your initial acceleration. The transmission may also cause a brief humming noise.
check your wheel bearing
Where is the humming located front, rear? Could be a vaccuum leak if high pitched, wheel bearings, improper brake installation. More info needed.
Bad wheel bearing or there is a problem with the tire itself.
it could be your tires on the pavement.
If the car is straight drive check the transmission fluid for full. Check the u joints on a rear wheel drive. Look for any loose parts on the exhaust system as well to try and find the humming problem.
The question you are asking is the same as a question like: Is building a house? or Is driving a car? You can built a house, you can drive a car and you can surely sing or hum a melody! Is singing or humming a melody, the act itself is not! But depending on what you are humming or what you are singing, the part that comes out of your mouth can be a melody...