Why don't they make cars with no turning radius?

Cars have been around for over a century, isn't this innovation a bit over-due?

By definition, one cannot have zero turning radius. That would imply a car has zero width.
http://en.wikipedia.org/wiki/Turning_radius

Perhaps you ask if a car can turn within its own axis?
There are plenty of vehicles that can do this, such as tracked vehicles (bulldozers, tanks) and skid-steer loaders. However, they require such extreme maneuverability for their intended function.

A car could do this if one had all wheel drive and steerable wheels front and rear, which can be independently controlled. Then one could do this:
http://www.youtube.com/watch?v=7ZX1WHIfhHA

However, such engineering feats would dramatically add to the cost and complexity of the car with minimal benefit.

Magicrat is correct. While in the Army, I drove a wheeled vehicle that had front and rear steering. It was a rough terrain 10 ton crane and had interlocked hydraulic steering so, in addition, to making tight turns, it could drive sideways as well. Its steering system was very complicated, and somewhat unreliable - it occasionally had a mind of its own.


Regards:
Oldbearcat

Curb-to-curb turning radius is the smallest radius the vehicle can turn without having the front wheels go over the curbs on either side of a street. And wall-to-wall turning radius is the smallest radius the vehicle can turn without the forward corners of the cab.

By definition, one cannot have zero turning radius. That would imply a car has zero width.
Perhaps you ask can car turn within their axis?
plenty of vehicles that can do this, such as tracked vehicles (bulldozers, tanks) and skid-steer loaders. However, they require such extreme maneuverability for their intended function.

By definition, one cannot have zero turning radius. That would imply a car has zero width.
Perhaps you ask can car turn within their axis?
plenty of vehicles that can do this, such as tracked vehicles (bulldozers, tanks) and skid-steer loaders. However, they require such extreme maneuverability for their intended function.
I think there's an echo in here ?

There's no situation which would give any regular car driver the need for an extremely tight turning circle is there?