[gallery link="none" columns="1" size="full" ids="89460"] photos: Frank Cassidy Over the years, Audi has designed dozens of models; some are utilitarian and some capture the soul and won't let go. The Ur-quattro is the latter model. Debuting over 40 years ago, the Audi quattro is a timeless design and still brings excitement whenever someone spot one in the wild. This 1983 model has come up for auction and will be interesting to see what it will go for. Here's the ad: [gallery link="none" column...