Get in a AH-99 Blackfoot press Q to start the engine while you are in the embark animation.
Notice how the player is able to start the engine when they are not even at the controls.
Get out of a AH-99 Blackfoot, look around with ALT in 3rd person.
Notice how the player's head stretches when jumping out.
use "accTime 0.25" to better see this effect.