Most likely it has unbalanced or bad tire(s). Bent wheel rims also can be the cause.
Nope.
When driving the IAC does not do anything because the car is not at an idle
Peeing off the side
Remove the muffler
It might have run out of gas.
Front Wheel alignment
Yes, it sure can. Have your tires inspected and balanced before assuming the drive shaft is the culprit. You may also have a bent wheel.
Your u-joints are worn out.
if its while your driving it could be wheel bearings
mass air flow sensor
toyota mr 2
two