Parts tend to loosen up in the car, and like anything else when cruising at fast speeds it intensifies the motion, hence the vibration.
Cars vibrate.
A car's steering wheel will vibrate when driving if the car's alignment needs to be adjusted.
i nono cave man, we have no car
Not all Altima's vibrate. If the car is vibrating, it may mean that there is something wrong with the tires.
as a result of bad spark plugs
You probably need new rotors
Yes.
That happens when your car wants to kill or injure you for crashing it.
loud, and shety muffler
push in the clutch
could be a broken engine mount.
the motor mount is bad