Austin Allegro
Helm
The "hub"
Its generally just called "The ships wheel" The helm
Seat Steering Wheel Mirror Tires Radio Brakes
Frank Bank as CLARENCE "LUMPY" RUTHERFORD (behind the steering wheel)
where is the name Austin from
The word "helm" can be used, but it generally refers to the entire steering mechanism, whether it's a sumple rudder and tiller, or a pneumatic wheel. I'd normally say "wheel" to differentiate it from a tiller, and to single that particular piece out from the entire mechanism, but "helm" is also fine.
Usually they call them kick panels or lower kick panel.
Rectangular cuboid
The proper term is helm. Hence the person doing the steering is called the helmsman.
Austin's last name is Moon.
The rectangular pyramid got its name through its base, a rectangle.