The 2006 Audi RS4 (that's the B7 for all you geeks) was a high point for Audi's car design. With a manual gearbox, 4.2-litre naturally aspirated V8 and a slinky estate body style, it has ticks so many petrolhead boxes. But how does it hold up in the 2020s? Could you use one as a family car? Join me for a walkaround and a bit of bleary-eyed nostalgia with Audi's phenomenal RS4.