if the car is rear wheel drive, sounds like a u-joint. If it is front wheel drive, sounds like a cv joint. It could also be your engine mounts wearing out. If the rubber insulation has worn out then the engine will shift slightly against the mount and make a clunking noise. This happened on my 96 Nissan Quest minivan.
your wife
It depends on when you hear the noise, but it likely a joint in the front wheel drive unit.
Gun shots from a drive-by ought to do the trick. But the magazine capacity would have to be somewhat small, or the cyclic rate quite high.
If it's a type of clunking noise, check your gearbox. If it's some kind of rattling, check your hubcaps.
It would help to specify the type of noise and type of vehicle in question.
Loose belt - will sound like a screeching noise.
Could be your timing belt.
could be a wheel bearing...or just that its a french car
If it's a clunk sound, check universal joint bearings and drive shaft bolts. Otherwise please describe noise.
If you operate a front wheel drive vehicle, the clunking noise you hear may be a CV joint bearing going bad.
If the chirping noise speeds up as the truck speeds up, check the u-joints in the drive line.
The most common cause of the whistling in a 2003 Impala is a vacuum leak. Any of the lines under the hood could be causing the noise.