FOR THE 2021 model year, Audi of America has decided to grace these shores with the RS 6 Avant: a powerful, delicious, lubricious sport wagon that will curl connoisseurs’ toes with delight. If they will just buy one. Audi had declined to import previous generations of its hottest “estate,” citing the low demand for station wagons in the U.S. and the costs of federalizing. The RS 6 has been a perennial on buff books’ lists of the “Coolest Cars Americans Can’t Get.”
Why is the RS 6 cool? This is something that’s hard for serious…