forget all that, the new CLS63 AMG owns the road these days. I've only seen it one time on a highway and this beast is no fucking joke
And I'll raise you the M6 Gran Coupe (meant to compete against the CLS---4 door coupe), which will be the top M line
apparently the M5 does 7:55 on the 'Ring, don't know what the CLS AmG does,
but the C63 Amg Black Series is a beast...