bearings
old tires
shock observers
steering wheel
i had a rattling noise in my 2000 ls, was told it was worn tensioners on timing chain. i guess they are made out of a poly carbon and wear after a while. haven't fixed problem yet...
It is probably a wheel bearing if it only does it while moving.
You might want to have the CV joints checked. When bearings start to go out, they make a "clicking" or "rattling" noise while driving - especially while making turns.
mobile phones
The correct answer is : drinking and driving
Most likely it is a belt on your car. Usually the squeeling is from a loose belt while idling and will also make noises while driving.
If the door is rattling while driving you may need to replace the plastic insulator. Open the door and check the rolling bearing at the bottom.
I'd like to know too! Mine does the same thing - it makes a rattling noise upon startup that goes away after 30 seconds or so and isn't present while driving or idling.
When your tires start making strange noises of any kind you should take your vehicle to an auto mechanic to check it out. You need to be safe on the road.
Drinking while driving
Oil in the distributor.
A lot of possible causes, I recommend a careful investigation.