The heart of every quattro is its unique 4WD system, the idea can be traced back to the Munga of 1954, which was built by Audi for the German Military, however it was the Iltis of 1967 that gave up its transmission.
The problem of how to transmit power both front and rear without the
use of bulky transfer gearboxes was solved by the use of a hollow shaft.
The solution which allowed a front drive, in-line engined Audi to
become a permanent 4WD model was a piece of precision engineering.
