Nice little mention in a BBC article 
Ordinary' supercars
Mr Wotke's RS6 and his previous car, an RS4, are both derived from the RS2, which was launched by Audi around the turn of the century.
The RS2 is "arguably the model that spurred the 'fast load-lugger' segment so popular with German premium brands", according to Paul Newton, automotive analyst with IHS Global Insight.
Others see BMW as the true pioneer in this field, pointing to how Audi's main rival launched a Touring version of its M5 super-saloon in 1992. At the time, it was the world's fastest estate car.
But there is little dispute about how it all started with the first M5, hand built by BMW Motorsport and launched way back in 1984, putting into practice the idea that ordinary saloon cars could be made to behave like supercars."

Ordinary' supercars
Mr Wotke's RS6 and his previous car, an RS4, are both derived from the RS2, which was launched by Audi around the turn of the century.
The RS2 is "arguably the model that spurred the 'fast load-lugger' segment so popular with German premium brands", according to Paul Newton, automotive analyst with IHS Global Insight.
Others see BMW as the true pioneer in this field, pointing to how Audi's main rival launched a Touring version of its M5 super-saloon in 1992. At the time, it was the world's fastest estate car.
But there is little dispute about how it all started with the first M5, hand built by BMW Motorsport and launched way back in 1984, putting into practice the idea that ordinary saloon cars could be made to behave like supercars."